冷卻塔風機全壓及安裝角度

1、風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)及轉速(su)(su)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)具有的(de)(de)(de)(de)(de)(de)(de)(de)(de)總壓(ya)(ya)(ya)(ya)力稱為(wei)全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)，是由風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)具有的(de)(de)(de)(de)(de)(de)(de)(de)(de)靜壓(ya)(ya)(ya)(ya)力和(he)(he)動(dong)(dong)壓(ya)(ya)(ya)(ya)力兩(liang)者組成兩(liang)者之(zhi)(zhi)(zhi)和(he)(he)。常用毫米水柱mmH2O表(biao)示。在(zai)(zai)(zai)(zai)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)型號及樣(yang)本中(zhong)(zhong)，有的(de)(de)(de)(de)(de)(de)(de)(de)(de)用全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)表(biao)示，而(er)有的(de)(de)(de)(de)(de)(de)(de)(de)(de)用靜壓(ya)(ya)(ya)(ya)表(biao)示。如(ru)LF型、L型等風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)主要(yao)(yao)(yao)性能介(jie)紹中(zhong)(zhong)為(wei)全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)；而(er)JT2LZ風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)等主要(yao)(yao)(yao)性能介(jie)紹中(zhong)(zhong)為(wei)靜壓(ya)(ya)(ya)(ya)。風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)一(yi)(yi)般在(zai)(zai)(zai)(zai)8～19mmH2O之(zhi)(zhi)(zhi)間；風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)靜壓(ya)(ya)(ya)(ya)通(tong)常在(zai)(zai)(zai)(zai)4～10mmH2O之(zhi)(zhi)(zhi)間。如(ru)用壓(ya)(ya)(ya)(ya)力表(biao)示，則(ze)(ze)單位(wei)為(wei)kgm2。小(xiao)(xiao)(xiao)型風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)由電動(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)直(zhi)接驅動(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)械效(xiao)率(lv)為(wei)100%，因此葉(xie)(xie)(xie)(xie)(xie)輪轉速(su)(su)較快。一(yi)(yi)般風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)輪直(zhi)徑≤2000mm的(de)(de)(de)(de)(de)(de)(de)(de)(de)，轉速(su)(su)均在(zai)(zai)(zai)(zai)300rmin以(yi)上(shang)(shang)，最(zui)高的(de)(de)(de)(de)(de)(de)(de)(de)(de)可達960rmin葉(xie)(xie)(xie)(xie)(xie)輪直(zhi)徑僅600mm；風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)直(zhi)徑2000mm的(de)(de)(de)(de)(de)(de)(de)(de)(de)，一(yi)(yi)般轉速(su)(su)小(xiao)(xiao)(xiao)于320rmin，風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)輪直(zhi)徑越大(da)(da)(da)，轉速(su)(su)越小(xiao)(xiao)(xiao)，如(ru)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)輪直(zhi)徑為(wei)9140mm，風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)2730000m3h時，轉速(su)(su)僅為(wei)110rmin。同(tong)(tong)一(yi)(yi)直(zhi)徑的(de)(de)(de)(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)，其(qi)(qi)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)和(he)(he)轉速(su)(su)不(bu)(bu)同(tong)(tong)，則(ze)(ze)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)也不(bu)(bu)同(tong)(tong)，而(er)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)不(bu)(bu)同(tong)(tong)，則(ze)(ze)全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)和(he)(he)靜壓(ya)(ya)(ya)(ya)也隨之(zhi)(zhi)(zhi)不(bu)(bu)同(tong)(tong)。也就(jiu)是說，為(wei)改(gai)(gai)變風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)增加或減少風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)，可采取改(gai)(gai)變風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)與(yu)改(gai)(gai)變風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)轉速(su)(su)來解決(jue)。2、風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)與(yu)測量(liang)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)銘牌上(shang)(shang)一(yi)(yi)般表(biao)明三檔風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)，不(bu)(bu)同(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)其(qi)(qi)全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)和(he)(he)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)也隨之(zhi)(zhi)(zhi)相應不(bu)(bu)同(tong)(tong)，其(qi)(qi)共同(tong)(tong)點是隨著風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)增加，則(ze)(ze)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)增大(da)(da)(da)，全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)增大(da)(da)(da)，電機(ji)(ji)(ji)(ji)(ji)(ji)(ji)軸功率(lv)也增大(da)(da)(da)。有的(de)(de)(de)(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)銘牌樣(yang)本上(shang)(shang)只表(biao)明一(yi)(yi)種葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)及其(qi)(qi)相應的(de)(de)(de)(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)含全(quan)(quan)(quan)(quan)壓(ya)(ya)(ya)(ya)。風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)這一(yi)(yi)工作點就(jiu)是風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)特(te)性曲線(xian)(xian)與(yu)冷(leng)卻(que)塔(ta)空氣(qi)動(dong)(dong)力阻力性能曲線(xian)(xian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)交點。風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)和(he)(he)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)不(bu)(bu)是可任意無(wu)限變化的(de)(de)(de)(de)(de)(de)(de)(de)(de)，僅局限在(zai)(zai)(zai)(zai)一(yi)(yi)定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)(de)范圍內，通(tong)常風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)變化范圍在(zai)(zai)(zai)(zai)8°～24°之(zhi)(zhi)(zhi)間，角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)太小(xiao)(xiao)(xiao)則(ze)(ze)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)不(bu)(bu)足，不(bu)(bu)能充分發揮風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)潛力和(he)(he)作用；安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)太大(da)(da)(da)，則(ze)(ze)振動(dong)(dong)和(he)(he)噪聲增大(da)(da)(da)，影響(xiang)塔(ta)體與(yu)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)壽命。多數冷(leng)卻(que)塔(ta)通(tong)常的(de)(de)(de)(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)為(wei)8°～15°之(zhi)(zhi)(zhi)間。安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)在(zai)(zai)(zai)(zai)20°以(yi)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)相對來說較少。冷(leng)卻(que)塔(ta)在(zai)(zai)(zai)(zai)試(shi)(shi)運(yun)行之(zhi)(zhi)(zhi)前，必須檢(jian)查風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)傾(qing)(qing)角(jiao)(jiao)(jiao)(jiao)(jiao)安(an)(an)(an)裝(zhuang)(zhuang)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)和(he)(he)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)端(duan)頭(tou)距風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)筒(tong)內壁的(de)(de)(de)(de)(de)(de)(de)(de)(de)間隙(xi)大(da)(da)(da)小(xiao)(xiao)(xiao)距離(li)，風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)安(an)(an)(an)裝(zhuang)(zhuang)在(zai)(zai)(zai)(zai)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)筒(tong)內的(de)(de)(de)(de)(de)(de)(de)(de)(de)下(xia)部(bu)分，風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)筒(tong)直(zhi)徑比風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)直(zhi)徑大(da)(da)(da)1%～2%大(da)(da)(da)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)取小(xiao)(xiao)(xiao)值，小(xiao)(xiao)(xiao)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)取大(da)(da)(da)值。在(zai)(zai)(zai)(zai)小(xiao)(xiao)(xiao)型風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)中(zhong)(zhong)，葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)端(duan)頭(tou)與(yu)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)筒(tong)內壁間隙(xi)距離(li)最(zui)小(xiao)(xiao)(xiao)值為(wei)8mm。間隙(xi)距離(li)過大(da)(da)(da)會造成局部(bu)渦(wo)流，降低風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)效(xiao)率(lv)。風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)全(quan)(quan)(quan)(quan)部(bu)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)應安(an)(an)(an)裝(zhuang)(zhuang)得相同(tong)(tong)，保(bao)持要(yao)(yao)(yao)求的(de)(de)(de)(de)(de)(de)(de)(de)(de)角(jiao)(jiao)(jiao)(jiao)(jiao)度(du)(du)(du)。在(zai)(zai)(zai)(zai)試(shi)(shi)轉之(zhi)(zhi)(zhi)前，按風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)生產廠提供的(de)(de)(de)(de)(de)(de)(de)(de)(de)要(yao)(yao)(yao)求和(he)(he)規定(ding)，對風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)傾(qing)(qing)角(jiao)(jiao)(jiao)(jiao)(jiao)進行測量(liang)。現以(yi)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)直(zhi)徑5m和(he)(he)7m，其(qi)(qi)傾(qing)(qing)斜角(jiao)(jiao)(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)測量(liang)方法為(wei)：沿葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)邊緣作兩(liang)個(ge)(ge)記(ji)號，其(qi)(qi)位(wei)置在(zai)(zai)(zai)(zai)離(li)端(duan)點500mm5m風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)或者700mm7m風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)處(chu)，把這兩(liang)個(ge)(ge)記(ji)號垂直(zhi)向下(xia)引(yin)到下(xia)面(mian)框架(jia)的(de)(de)(de)(de)(de)(de)(de)(de)(de)同(tong)(tong)梁上(shang)(shang)，再測量(liang)出離(li)開(kai)梁的(de)(de)(de)(de)(de)(de)(de)(de)(de)垂直(zhi)距離(li)H1及H2和(he)(he)相互間的(de)(de)(de)(de)(de)(de)(de)(de)(de)水平距離(li)L，即離(li)端(duan)點的(de)(de)(de)(de)(de)(de)(de)(de)(de)距離(li)處(chu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)寬(kuan)度(du)(du)(du)。則(ze)(ze)葉(xie)(xie)(xie)(xie)(xie)片(pian)(pian)(pian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)傾(qing)(qing)斜角(jiao)(jiao)(jiao)(jiao)(jiao)α按下(xia)式計算：

冷卻塔噪聲測試

廣(guang)義(yi)(yi)來(lai)(lai)(lai)說，凡人(ren)(ren)們不(bu)(bu)(bu)歡迎的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)(yin)通(tong)稱(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)主(zhu)(zhu)要包(bao)括(kuo)風(feng)(feng)(feng)機(ji)(ji)(ji)含(han)(han)(han)振動和(he)(he)(he)淋(lin)(lin)水(shui)(shui)(shui)(shui)而(er)(er)產(chan)(chan)生(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)兩(liang)(liang)部分(fen)(fen)(fen)(fen)(fen)(fen)。抽風(feng)(feng)(feng)式(shi)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)機(ji)(ji)(ji)設在(zai)(zai)(zai)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)體(ti)(ti)上(shang)(shang)(shang)部的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)筒內(nei)，一(yi)(yi)(yi)般來(lai)(lai)(lai)說是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)主(zhu)(zhu)要噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)。當(dang)(dang)風(feng)(feng)(feng)機(ji)(ji)(ji)轉動時(shi)(shi)，葉片間的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)空氣引(yin)起(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)力(li)波(bo)動和(he)(he)(he)機(ji)(ji)(ji)械(xie)振動而(er)(er)產(chan)(chan)生(sheng)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，并(bing)通(tong)過(guo)排(pai)風(feng)(feng)(feng)口和(he)(he)(he)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)體(ti)(ti)向(xiang)四周傳(chuan)(chuan)播。同(tong)(tong)時(shi)(shi)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)水(shui)(shui)(shui)(shui)在(zai)(zai)(zai)下(xia)落過(guo)程(cheng)(cheng)及(ji)(ji)與(yu)(yu)(yu)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)體(ti)(ti)底(di)盤的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)存水(shui)(shui)(shui)(shui)撞擊(ji)中(zhong)又產(chan)(chan)生(sheng)了(le)(le)淋(lin)(lin)水(shui)(shui)(shui)(shui)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，其(qi)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)小(xiao)與(yu)(yu)(yu)落水(shui)(shui)(shui)(shui)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)高(gao)度(du)、流量的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)小(xiao)有關。這(zhe)(zhe)兩(liang)(liang)股噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)會污染(ran)周圍環境，影響(xiang)人(ren)(ren)們的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)學(xue)習(xi)、工作(zuo)和(he)(he)(he)休息(xi)。所(suo)(suo)以(yi)(yi)(yi)(yi)(yi)(yi)，在(zai)(zai)(zai)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)設計(ji)(ji)(ji)(ji)中(zhong)，應(ying)(ying)從(cong)(cong)(cong)(cong)風(feng)(feng)(feng)機(ji)(ji)(ji)和(he)(he)(he)淋(lin)(lin)水(shui)(shui)(shui)(shui)兩(liang)(liang)方(fang)(fang)面來(lai)(lai)(lai)控(kong)制噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，使(shi)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)產(chan)(chan)生(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降低(di)在(zai)(zai)(zai)盡可(ke)(ke)能(neng)(neng)低(di)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)范圍內(nei)。在(zai)(zai)(zai)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學(xue)中(zhong)，聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)強(qiang)(qiang)、聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)、聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)功率(lv)三者的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)小(xiao)都(dou)(dou)用(yong)(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)dB來(lai)(lai)(lai)表(biao)(biao)示(shi)，它(ta)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學(xue)中(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)常用(yong)(yong)(yong)(yong)單(dan)位(wei)，是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)兩(liang)(liang)個(ge)(ge)(ge)(ge)量比(bi)(bi)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)常用(yong)(yong)(yong)(yong)對(dui)(dui)(dui)(dui)數(shu)(shu)。冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)定(ding)(ding)(ding)屬于(yu)(yu)(yu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)。因(yin)(yin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)變(bian)化范圍非常大(da)，數(shu)(shu)量相(xiang)(xiang)(xiang)差(cha)(cha)很(hen)(hen)多(duo)(duo)(duo)，用(yong)(yong)(yong)(yong)絕對(dui)(dui)(dui)(dui)單(dan)位(wei)表(biao)(biao)示(shi)極(ji)(ji)不(bu)(bu)(bu)方(fang)(fang)便，所(suo)(suo)以(yi)(yi)(yi)(yi)(yi)(yi)，人(ren)(ren)們把(ba)(ba)空氣中(zhong)參(can)考(kao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)Pref=2×10-5Nm2即(ji)(ji)稱(cheng)帕(pa)作(zuo)為(wei)(wei)(wei)(wei)(wei)(wei)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)定(ding)(ding)(ding)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)零(ling)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)標(biao)(biao)準(zhun)2×10-5Pa，此數(shu)(shu)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)正(zheng)(zheng)常人(ren)(ren)耳(er)對(dui)(dui)(dui)(dui)1000Hz聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)(yin)所(suo)(suo)能(neng)(neng)覺察的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，低(di)于(yu)(yu)(yu)此值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)就(jiu)(jiu)不(bu)(bu)(bu)能(neng)(neng)覺察到(dao)(dao)(dao)了(le)(le)，故把(ba)(ba)該(gai)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)作(zuo)為(wei)(wei)(wei)(wei)(wei)(wei)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)中(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)零(ling)分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)。聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)以(yi)(yi)(yi)(yi)(yi)(yi)符(fu)號L表(biao)(biao)示(shi)，其(qi)定(ding)(ding)(ding)義(yi)(yi)為(wei)(wei)(wei)(wei)(wei)(wei)將待測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)有效(xiao)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)與(yu)(yu)(yu)參(can)考(kao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)比(bi)(bi)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)取常用(yong)(yong)(yong)(yong)對(dui)(dui)(dui)(dui)數(shu)(shu)，再乘以(yi)(yi)(yi)(yi)(yi)(yi)20，即(ji)(ji)：平時(shi)(shi)人(ren)(ren)耳(er)所(suo)(suo)能(neng)(neng)經受的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)約140dB，最高(gao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)可(ke)(ke)高(gao)達180dB，10～20dB的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)屬于(yu)(yu)(yu)極(ji)(ji)輕響(xiang)度(du)；20～40dB的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)屬于(yu)(yu)(yu)輕響(xiang)度(du)；80～100dB屬于(yu)(yu)(yu)極(ji)(ji)響(xiang)度(du)；100～120dB屬于(yu)(yu)(yu)震耳(er)響(xiang)度(du)。對(dui)(dui)(dui)(dui)居住的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)安靜小(xiao)區(qu)來(lai)(lai)(lai)說，要求(qiu)白天＜55dB，晚上(shang)(shang)(shang)＜50dB。目(mu)前冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，以(yi)(yi)(yi)(yi)(yi)(yi)離(li)(li)地(di)面1、5m，距塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)1倍(bei)(bei)(bei)直(zhi)徑(jing)圓形(xing)逆(ni)流塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)為(wei)(wei)(wei)(wei)(wei)(wei)基準(zhun)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。標(biao)(biao)準(zhun)型(xing)(xing)(xing)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)在(zai)(zai)(zai)68～75dB；低(di)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)型(xing)(xing)(xing)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)為(wei)(wei)(wei)(wei)(wei)(wei)60～71dB；超低(di)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)55～68dB。可(ke)(ke)見(jian)，基本上(shang)(shang)(shang)都(dou)(dou)屬于(yu)(yu)(yu)響(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)響(xiang)度(du)范圍之(zhi)內(nei)。1、測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀器(qi)及(ji)(ji)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)1測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀器(qi)：1丹麥(mai)B&K廠家制造的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)精(jing)(jing)密聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)計(ji)(ji)(ji)(ji)，或(huo)(huo)(huo)仿丹麥(mai)B&K廠家的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)國(guo)(guo)產(chan)(chan)ND2型(xing)(xing)(xing)精(jing)(jing)密聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)計(ji)(ji)(ji)(ji)。2丹麥(mai)B&K廠家制造的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)濾波(bo)器(qi)，或(huo)(huo)(huo)仿丹麥(mai)B&K廠家的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)國(guo)(guo)產(chan)(chan)倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)濾波(bo)器(qi)與(yu)(yu)(yu)ND2型(xing)(xing)(xing)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)計(ji)(ji)(ji)(ji)配(pei)(pei)套(tao)。3丹麥(mai)B&K廠家制造的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容話筒，或(huo)(huo)(huo)仿丹麥(mai)B&K廠家的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)國(guo)(guo)產(chan)(chan)電(dian)(dian)(dian)容話筒與(yu)(yu)(yu)ND2型(xing)(xing)(xing)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)計(ji)(ji)(ji)(ji)配(pei)(pei)套(tao)。4NX6型(xing)(xing)(xing)活塞(sai)發聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)校(xiao)正(zheng)(zheng)。5測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀器(qi)系統圖(tu)(tu)(tu)(tu)見(jian)圖(tu)(tu)(tu)(tu)10-11。傳(chuan)(chuan)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)前置(zhi)(zhi)(zhi)放(fang)大(da)器(qi)構成(cheng)(cheng)傳(chuan)(chuan)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)單(dan)元(yuan)，傳(chuan)(chuan)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)單(dan)元(yuan)再加(jia)(jia)(jia)(jia)(jia)(jia)(jia)上(shang)(shang)(shang)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)量放(fang)大(da)器(qi)則(ze)(ze)(ze)組(zu)(zu)成(cheng)(cheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)計(ji)(ji)(ji)(ji)。電(dian)(dian)(dian)容傳(chuan)(chuan)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)即(ji)(ji)電(dian)(dian)(dian)容話筒是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)靈(ling)敏度(du)和(he)(he)(he)精(jing)(jing)度(du)較(jiao)高(gao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)、電(dian)(dian)(dian)換能(neng)(neng)器(qi)，用(yong)(yong)(yong)(yong)來(lai)(lai)(lai)檢測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)(yin)訊號。濾波(bo)器(qi)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)普分(fen)(fen)(fen)(fen)(fen)(fen)析的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)核心。在(zai)(zai)(zai)濾波(bo)器(qi)中(zhong)配(pei)(pei)上(shang)(shang)(shang)前、后(hou)(hou)(hou)放(fang)大(da)器(qi)及(ji)(ji)檢波(bo)、表(biao)(biao)頭電(dian)(dian)(dian)路就(jiu)(jiu)組(zu)(zu)成(cheng)(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)分(fen)(fen)(fen)(fen)(fen)(fen)析儀器(qi)。2測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)：以(yi)(yi)(yi)(yi)(yi)(yi)機(ji)(ji)(ji)械(xie)通(tong)風(feng)(feng)(feng)逆(ni)流式(shi)玻璃鋼冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)為(wei)(wei)(wei)(wei)(wei)(wei)例，其(qi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)如圖(tu)(tu)(tu)(tu)10-12所(suo)(suo)示(shi)。可(ke)(ke)取定(ding)(ding)(ding)6個(ge)(ge)(ge)(ge)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)，第(di)1點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)在(zai)(zai)(zai)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)風(feng)(feng)(feng)筒出(chu)(chu)口45°方(fang)(fang)向(xiang)，距離(li)(li)為(wei)(wei)(wei)(wei)(wei)(wei)Df即(ji)(ji)為(wei)(wei)(wei)(wei)(wei)(wei)風(feng)(feng)(feng)機(ji)(ji)(ji)直(zhi)徑(jing)，第(di)2點(dian)(dian)(dian)(dian)(dian)至第(di)6點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)在(zai)(zai)(zai)離(li)(li)地(di)面1、5m高(gao)處，距離(li)(li)分(fen)(fen)(fen)(fen)(fen)(fen)別(bie)為(wei)(wei)(wei)(wei)(wei)(wei)D塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)體(ti)(ti)直(zhi)徑(jing)、5m、10m、15m、20m。當(dang)(dang)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)橫流式(shi)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)時(shi)(shi)，第(di)2點(dian)(dian)(dian)(dian)(dian)距離(li)(li)D的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)計(ji)(ji)(ji)(ji)算(suan)(suan)(suan)式(shi)為(wei)(wei)(wei)(wei)(wei)(wei)：，a為(wei)(wei)(wei)(wei)(wei)(wei)12塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)頂部長(chang)度(du)+塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)底(di)部長(chang)度(du)，b為(wei)(wei)(wei)(wei)(wei)(wei)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)寬度(du)。方(fang)(fang)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)因(yin)(yin)四條(tiao)邊相(xiang)(xiang)(xiang)等，可(ke)(ke)采(cai)(cai)用(yong)(yong)(yong)(yong)D=1、13a，a為(wei)(wei)(wei)(wei)(wei)(wei)邊長(chang)。按(an)(an)上(shang)(shang)(shang)述(shu)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)，噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)時(shi)(shi)分(fen)(fen)(fen)(fen)(fen)(fen)淋(lin)(lin)水(shui)(shui)(shui)(shui)與(yu)(yu)(yu)不(bu)(bu)(bu)淋(lin)(lin)水(shui)(shui)(shui)(shui)兩(liang)(liang)種情況(kuang)進(jin)(jin)(jin)行(xing)。淋(lin)(lin)水(shui)(shui)(shui)(shui)時(shi)(shi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)為(wei)(wei)(wei)(wei)(wei)(wei)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)總(zong)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)：不(bu)(bu)(bu)淋(lin)(lin)水(shui)(shui)(shui)(shui)時(shi)(shi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)風(feng)(feng)(feng)機(ji)(ji)(ji)含(han)(han)(han)電(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，兩(liang)(liang)種情況(kuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)結(jie)果(guo)(guo)(guo)都(dou)(dou)應(ying)(ying)匯總(zong)到(dao)(dao)(dao)記(ji)錄表(biao)(biao)中(zhong)附表(biao)(biao)1。2、噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)修(xiu)(xiu)(xiu)正(zheng)(zheng)在(zai)(zai)(zai)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)時(shi)(shi)，經常會遇(yu)到(dao)(dao)(dao)環境噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)稱(cheng)背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)或(huo)(huo)(huo)本底(di)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)很(hen)(hen)大(da)，而(er)(er)背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)又以(yi)(yi)(yi)(yi)(yi)(yi)n個(ge)(ge)(ge)(ge)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)所(suo)(suo)組(zu)(zu)成(cheng)(cheng)。這(zhe)(zhe)種情況(kuang)下(xia)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)由背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)與(yu)(yu)(yu)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)組(zu)(zu)合(he)成(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)混(hun)合(he)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)實際噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)比(bi)(bi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)要低(di)，故要進(jin)(jin)(jin)行(xing)修(xiu)(xiu)(xiu)正(zheng)(zheng)。而(er)(er)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)修(xiu)(xiu)(xiu)正(zheng)(zheng)要使(shi)用(yong)(yong)(yong)(yong)到(dao)(dao)(dao)有關噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)計(ji)(ji)(ji)(ji)算(suan)(suan)(suan)公式(shi)和(he)(he)(he)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)，故這(zhe)(zhe)里作(zuo)簡(jian)要介紹(shao)。1分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)(xiang)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)修(xiu)(xiu)(xiu)正(zheng)(zheng)如果(guo)(guo)(guo)一(yi)(yi)(yi)臺機(ji)(ji)(ji)器(qi)在(zai)(zai)(zai)某(mou)點(dian)(dian)(dian)(dian)(dian)產(chan)(chan)生(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)為(wei)(wei)(wei)(wei)(wei)(wei)80dB分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)，另一(yi)(yi)(yi)臺機(ji)(ji)(ji)器(qi)為(wei)(wei)(wei)(wei)(wei)(wei)85dB，那(nei)么這(zhe)(zhe)點(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)多(duo)(duo)(duo)少分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)，這(zhe)(zhe)不(bu)(bu)(bu)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)簡(jian)單(dan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)算(suan)(suan)(suan)術(shu)相(xiang)(xiang)(xiang)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)，而(er)(er)應(ying)(ying)該(gai)用(yong)(yong)(yong)(yong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)(neng)量疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)概念(nian)和(he)(he)(he)原理，兩(liang)(liang)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)在(zai)(zai)(zai)該(gai)點(dian)(dian)(dian)(dian)(dian)產(chan)(chan)生(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)PT應(ying)(ying)有：由式(shi)10-25繪(hui)(hui)制成(cheng)(cheng)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)如圖(tu)(tu)(tu)(tu)10-13所(suo)(suo)示(shi)，這(zhe)(zhe)里假定(ding)(ding)(ding)Lp1≥Lp2，這(zhe)(zhe)樣(yang)，用(yong)(yong)(yong)(yong)圖(tu)(tu)(tu)(tu)10-13可(ke)(ke)不(bu)(bu)(bu)經過(guo)對(dui)(dui)(dui)(dui)數(shu)(shu)和(he)(he)(he)指數(shu)(shu)運算(suan)(suan)(suan)便可(ke)(ke)很(hen)(hen)方(fang)(fang)便而(er)(er)快速地(di)查(cha)出(chu)(chu)兩(liang)(liang)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)后(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)。如已知(zhi)一(yi)(yi)(yi)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)比(bi)(bi)另一(yi)(yi)(yi)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)高(gao)出(chu)(chu)2、5dB，即(ji)(ji)ΔLp=Lp1-Lp2=2、5dB，則(ze)(ze)(ze)從(cong)(cong)(cong)(cong)圖(tu)(tu)(tu)(tu)10-13橫坐(zuo)標(biao)(biao)2、5dB處向(xiang)上(shang)(shang)(shang)作(zuo)垂線(xian)(xian)(xian)(xian)(xian)(xian)與(yu)(yu)(yu)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)交于(yu)(yu)(yu)一(yi)(yi)(yi)點(dian)(dian)(dian)(dian)(dian)，該(gai)點(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)縱坐(zuo)標(biao)(biao)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)為(wei)(wei)(wei)(wei)(wei)(wei)2、0dB，則(ze)(ze)(ze)得(de)(de)(de)(de)ΔL′=2、0dB，即(ji)(ji)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)比(bi)(bi)第(di)一(yi)(yi)(yi)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)高(gao)出(chu)(chu)2、0dB。從(cong)(cong)(cong)(cong)圖(tu)(tu)(tu)(tu)10-13中(zhong)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)可(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)看出(chu)(chu)：兩(liang)(liang)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)相(xiang)(xiang)(xiang)差(cha)(cha)越(yue)(yue)(yue)大(da)，即(ji)(ji)ΔLp越(yue)(yue)(yue)大(da)，則(ze)(ze)(ze)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)后(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)比(bi)(bi)其(qi)中(zhong)大(da)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)一(yi)(yi)(yi)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)增加(jia)(jia)(jia)(jia)(jia)(jia)(jia)得(de)(de)(de)(de)越(yue)(yue)(yue)小(xiao)，即(ji)(ji)ΔL′越(yue)(yue)(yue)小(xiao)。如ΔLp=9dB比(bi)(bi)上(shang)(shang)(shang)述(shu)ΔLp=2、5dB大(da)7、5dB，查(cha)圖(tu)(tu)(tu)(tu)10-13曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)得(de)(de)(de)(de)ΔL′=0、5dB比(bi)(bi)上(shang)(shang)(shang)述(shu)ΔL′=2、0分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)小(xiao)1、5分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)。故當(dang)(dang)兩(liang)(liang)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)相(xiang)(xiang)(xiang)差(cha)(cha)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)達到(dao)(dao)(dao)10dB以(yi)(yi)(yi)(yi)(yi)(yi)上(shang)(shang)(shang)時(shi)(shi)，增加(jia)(jia)(jia)(jia)(jia)(jia)(jia)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)可(ke)(ke)忽略(lve)不(bu)(bu)(bu)計(ji)(ji)(ji)(ji)。對(dui)(dui)(dui)(dui)于(yu)(yu)(yu)多(duo)(duo)(duo)于(yu)(yu)(yu)兩(liang)(liang)個(ge)(ge)(ge)(ge)即(ji)(ji)n2的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)，除用(yong)(yong)(yong)(yong)式(shi)10-21計(ji)(ji)(ji)(ji)算(suan)(suan)(suan)外，也可(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)利用(yong)(yong)(yong)(yong)兩(liang)(liang)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)方(fang)(fang)法(fa)求(qiu)得(de)(de)(de)(de)，就(jiu)(jiu)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)把(ba)(ba)其(qi)中(zhong)兩(liang)(liang)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)先疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)，將疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)結(jie)果(guo)(guo)(guo)與(yu)(yu)(yu)第(di)三個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)，如此一(yi)(yi)(yi)直(zhi)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)到(dao)(dao)(dao)最后(hou)(hou)(hou)一(yi)(yi)(yi)個(ge)(ge)(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)。為(wei)(wei)(wei)(wei)(wei)(wei)簡(jian)便起(qi)見(jian)，常常從(cong)(cong)(cong)(cong)其(qi)中(zhong)較(jiao)大(da)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)開始，這(zhe)(zhe)樣(yang)在(zai)(zai)(zai)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)過(guo)程(cheng)(cheng)中(zhong)當(dang)(dang)疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)大(da)于(yu)(yu)(yu)后(hou)(hou)(hou)面尚未疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)10dB以(yi)(yi)(yi)(yi)(yi)(yi)上(shang)(shang)(shang)時(shi)(shi)，如果(guo)(guo)(guo)未疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)數(shu)(shu)目(mu)不(bu)(bu)(bu)多(duo)(duo)(duo)，則(ze)(ze)(ze)后(hou)(hou)(hou)面的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)這(zhe)(zhe)些(xie)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)就(jiu)(jiu)可(ke)(ke)略(lve)去不(bu)(bu)(bu)計(ji)(ji)(ji)(ji)了(le)(le)。2分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)相(xiang)(xiang)(xiang)減(jian)修(xiu)(xiu)(xiu)正(zheng)(zheng)在(zai)(zai)(zai)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)過(guo)程(cheng)(cheng)中(zhong)，常受背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)干擾。如果(guo)(guo)(guo)包(bao)括(kuo)背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)在(zai)(zai)(zai)內(nei)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)為(wei)(wei)(wei)(wei)(wei)(wei)LpT，則(ze)(ze)(ze)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)停止(zhi)運行(xing)時(shi)(shi)，測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)為(wei)(wei)(wei)(wei)(wei)(wei)LpB，那(nei)么如何(he)從(cong)(cong)(cong)(cong)這(zhe)(zhe)一(yi)(yi)(yi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)結(jie)果(guo)(guo)(guo)中(zhong)得(de)(de)(de)(de)出(chu)(chu)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)真實聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)，這(zhe)(zhe)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)求(qiu)LpT中(zhong)扣(kou)去因(yin)(yin)LpB所(suo)(suo)引(yin)起(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)增加(jia)(jia)(jia)(jia)(jia)(jia)(jia)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)等于(yu)(yu)(yu)多(duo)(duo)(duo)少，即(ji)(ji)分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)相(xiang)(xiang)(xiang)減(jian)修(xiu)(xiu)(xiu)正(zheng)(zheng)問題。由式(shi)10-22可(ke)(ke)得(de)(de)(de)(de)到(dao)(dao)(dao)被(bei)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)為(wei)(wei)(wei)(wei)(wei)(wei)：如果(guo)(guo)(guo)令總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)LPT與(yu)(yu)(yu)背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)ΔLpB=LpT-LpB，則(ze)(ze)(ze)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)LpT與(yu)(yu)(yu)被(bei)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)LpS的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)ΔLpS可(ke)(ke)從(cong)(cong)(cong)(cong)式(shi)10-26中(zhong)得(de)(de)(de)(de)出(chu)(chu)：如LPT=91dB，LPB=83dB，則(ze)(ze)(ze)按(an)(an)式(shi)10-26計(ji)(ji)(ji)(ji)算(suan)(suan)(suan)得(de)(de)(de)(de)LPS=90、3dB。如果(guo)(guo)(guo)按(an)(an)式(shi)10-27計(ji)(ji)(ji)(ji)算(suan)(suan)(suan)，ΔLPB=LPT-LPB=8dB，求(qiu)得(de)(de)(de)(de)ΔLPS=0、7dB，從(cong)(cong)(cong)(cong)而(er)(er)得(de)(de)(de)(de)LPS=LPT-ΔLPS=90、3dB。例如：測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)某(mou)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)綜合(he)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)為(wei)(wei)(wei)(wei)(wei)(wei)74dB，冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)停止(zhi)運行(xing)時(shi)(shi)背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)為(wei)(wei)(wei)(wei)(wei)(wei)68dB，求(qiu)此冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)實際聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)。現(xian)LpT=74dB，LpB=68dB按(an)(an)式(shi)10-27計(ji)(ji)(ji)(ji)算(suan)(suan)(suan)為(wei)(wei)(wei)(wei)(wei)(wei)：所(suo)(suo)以(yi)(yi)(yi)(yi)(yi)(yi)：LpS=LpT-ΔLpS=74-1、26=72、74dB查(cha)圖(tu)(tu)(tu)(tu)10-14，由LpB=74-68=6dB，在(zai)(zai)(zai)圖(tu)(tu)(tu)(tu)中(zhong)橫坐(zuo)標(biao)(biao)6向(xiang)上(shang)(shang)(shang)作(zuo)垂線(xian)(xian)(xian)(xian)(xian)(xian)與(yu)(yu)(yu)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)交點(dian)(dian)(dian)(dian)(dian)，得(de)(de)(de)(de)ΔLpS=1、25dB，則(ze)(ze)(ze)得(de)(de)(de)(de)：LpS=LpT-ΔLpS=72、75dB如果(guo)(guo)(guo)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)多(duo)(duo)(duo)頻(pin)(pin)率(lv)復合(he)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)，則(ze)(ze)(ze)在(zai)(zai)(zai)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)背(bei)景(jing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)和(he)(he)(he)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)時(shi)(shi)，應(ying)(ying)分(fen)(fen)(fen)(fen)(fen)(fen)別(bie)按(an)(an)各個(ge)(ge)(ge)(ge)頻(pin)(pin)率(lv)進(jin)(jin)(jin)行(xing)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)，對(dui)(dui)(dui)(dui)每一(yi)(yi)(yi)頻(pin)(pin)率(lv)帶聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)逐一(yi)(yi)(yi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)以(yi)(yi)(yi)(yi)(yi)(yi)修(xiu)(xiu)(xiu)正(zheng)(zheng)。冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)中(zhong)，基本上(shang)(shang)(shang)均采(cai)(cai)用(yong)(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)相(xiang)(xiang)(xiang)減(jian)修(xiu)(xiu)(xiu)正(zheng)(zheng)法(fa)。測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)總(zong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)LpT值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)(he)(he)背(bei)景(jing)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)LpB值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)后(hou)(hou)(hou)，一(yi)(yi)(yi)般均采(cai)(cai)用(yong)(yong)(yong)(yong)查(cha)圖(tu)(tu)(tu)(tu)10-14曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)得(de)(de)(de)(de)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)實際聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)LpS。這(zhe)(zhe)里論述(shu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)采(cai)(cai)用(yong)(yong)(yong)(yong)能(neng)(neng)量疊(die)(die)(die)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)概念(nian)和(he)(he)(he)原理，故關于(yu)(yu)(yu)分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)相(xiang)(xiang)(xiang)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)和(he)(he)(he)相(xiang)(xiang)(xiang)減(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)計(ji)(ji)(ji)(ji)算(suan)(suan)(suan)公式(shi)和(he)(he)(he)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)也都(dou)(dou)適(shi)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)強(qiang)(qiang)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)和(he)(he)(he)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)功率(lv)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)，不(bu)(bu)(bu)僅局限于(yu)(yu)(yu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)。3、噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)標(biao)(biao)準(zhun)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)隨(sui)時(shi)(shi)間變(bian)化都(dou)(dou)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)正(zheng)(zheng)弦形(xing)式(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)，則(ze)(ze)(ze)這(zhe)(zhe)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)(yin)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)只含(han)(han)(han)有單(dan)一(yi)(yi)(yi)頻(pin)(pin)率(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)純音(yin)(yin)。而(er)(er)在(zai)(zai)(zai)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)中(zhong)，噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)都(dou)(dou)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)由許(xu)多(duo)(duo)(duo)頻(pin)(pin)率(lv)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)組(zu)(zu)成(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)復合(he)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。而(er)(er)采(cai)(cai)用(yong)(yong)(yong)(yong)頻(pin)(pin)譜(pu)分(fen)(fen)(fen)(fen)(fen)(fen)析后(hou)(hou)(hou)再進(jin)(jin)(jin)行(xing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)很(hen)(hen)復雜。目(mu)前國(guo)(guo)內(nei)外采(cai)(cai)用(yong)(yong)(yong)(yong)兩(liang)(liang)種評(ping)價(jia)(jia)(jia)(jia)(jia)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)標(biao)(biao)準(zhun)：一(yi)(yi)(yi)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)A聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)，單(dan)位(wei)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)dBA，它(ta)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)定(ding)(ding)(ding)容易、直(zhi)觀，是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)目(mu)前冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)中(zhong)最常用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)，都(dou)(dou)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)以(yi)(yi)(yi)(yi)(yi)(yi)A聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)來(lai)(lai)(lai)表(biao)(biao)明(ming)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)小(xiao)。但由于(yu)(yu)(yu)A聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)所(suo)(suo)有頻(pin)(pin)率(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)綜合(he)反映，同(tong)(tong)一(yi)(yi)(yi)個(ge)(ge)(ge)(ge)A聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)兩(liang)(liang)種噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)譜(pu)可(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)大(da)不(bu)(bu)(bu)相(xiang)(xiang)(xiang)同(tong)(tong)，因(yin)(yin)而(er)(er)引(yin)起(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)干擾也就(jiu)(jiu)不(bu)(bu)(bu)同(tong)(tong)。為(wei)(wei)(wei)(wei)(wei)(wei)此，就(jiu)(jiu)采(cai)(cai)用(yong)(yong)(yong)(yong)第(di)二種評(ping)價(jia)(jia)(jia)(jia)(jia)標(biao)(biao)準(zhun)—噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)或(huo)(huo)(huo)稱(cheng)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)指數(shu)(shu)，圖(tu)(tu)(tu)(tu)10-15是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)目(mu)前應(ying)(ying)用(yong)(yong)(yong)(yong)比(bi)(bi)較(jiao)廣(guang)泛(fan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)國(guo)(guo)際標(biao)(biao)準(zhun)化組(zu)(zu)織ISO推薦的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)，N值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)等于(yu)(yu)(yu)中(zhong)心頻(pin)(pin)率(lv)為(wei)(wei)(wei)(wei)(wei)(wei)1000Hz倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)分(fen)(fen)(fen)(fen)(fen)(fen)貝(bei)(bei)(bei)(bei)(bei)數(shu)(shu)。曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)已考(kao)慮到(dao)(dao)(dao)高(gao)頻(pin)(pin)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)比(bi)(bi)低(di)頻(pin)(pin)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)對(dui)(dui)(dui)(dui)人(ren)(ren)們的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)影響(xiang)嚴重些(xie)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)因(yin)(yin)素，故在(zai)(zai)(zai)同(tong)(tong)一(yi)(yi)(yi)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)上(shang)(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)各倍(bei)(bei)(bei)頻(pin)(pin)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)，可(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)認為(wei)(wei)(wei)(wei)(wei)(wei)具有相(xiang)(xiang)(xiang)同(tong)(tong)程(cheng)(cheng)度(du)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)干擾。顯(xian)然(ran)，用(yong)(yong)(yong)(yong)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)進(jin)(jin)(jin)行(xing)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)定(ding)(ding)(ding)是(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)把(ba)(ba)某(mou)一(yi)(yi)(yi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)，按(an)(an)圖(tu)(tu)(tu)(tu)中(zhong)不(bu)(bu)(bu)同(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)中(zhong)心頻(pin)(pin)率(lv)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)相(xiang)(xiang)(xiang)應(ying)(ying)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)dB值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，然(ran)后(hou)(hou)(hou)把(ba)(ba)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)各值(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)(dian)到(dao)(dao)(dao)評(ping)價(jia)(jia)(jia)(jia)(jia)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)圖(tu)(tu)(tu)(tu)上(shang)(shang)(shang)，再把(ba)(ba)各點(dian)(dian)(dian)(dian)(dian)連接起(qi)來(lai)(lai)(lai)成(cheng)(cheng)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)，來(lai)(lai)(lai)分(fen)(fen)(fen)(fen)(fen)(fen)析和(he)(he)(he)評(ping)價(jia)(jia)(jia)(jia)(jia)該(gai)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。如按(an)(an)圖(tu)(tu)(tu)(tu)10215中(zhong)倍(bei)(bei)(bei)頻(pin)(pin)中(zhong)心頻(pin)(pin)率(lv)63～8K，在(zai)(zai)(zai)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)2測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)得(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)dB分(fen)(fen)(fen)(fen)(fen)(fen)別(bie)為(wei)(wei)(wei)(wei)(wei)(wei)61、62、5、61、43、5、32、23，則(ze)(ze)(ze)繪(hui)(hui)到(dao)(dao)(dao)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)上(shang)(shang)(shang)如虛線(xian)(xian)(xian)(xian)(xian)(xian)所(suo)(suo)示(shi)，則(ze)(ze)(ze)該(gai)點(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)評(ping)價(jia)(jia)(jia)(jia)(jia)符(fu)合(he)N60。4、噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)報告噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)報告包(bao)括(kuo)以(yi)(yi)(yi)(yi)(yi)(yi)下(xia)內(nei)容：1委(wei)托(tuo)單(dan)位(wei)：寫明(ming)委(wei)托(tuo)單(dan)位(wei)全(quan)名稱(cheng)。2測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)對(dui)(dui)(dui)(dui)象：寫明(ming)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)型(xing)(xing)(xing)號、水(shui)(shui)(shui)(shui)量、配(pei)(pei)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)機(ji)(ji)(ji)及(ji)(ji)電(dian)(dian)(dian)機(ji)(ji)(ji)含(han)(han)(han)電(dian)(dian)(dian)機(ji)(ji)(ji)功率(lv)。3測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)內(nei)容：噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)。4工況(kuang)：淋(lin)(lin)水(shui)(shui)(shui)(shui)與(yu)(yu)(yu)不(bu)(bu)(bu)淋(lin)(lin)水(shui)(shui)(shui)(shui)。5使(shi)用(yong)(yong)(yong)(yong)儀器(qi)：測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀器(qi)及(ji)(ji)型(xing)(xing)(xing)號。6環境條(tiao)件：測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)當(dang)(dang)地(di)、當(dang)(dang)時(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)環境噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，溫度(du)濕度(du)，風(feng)(feng)(feng)向(xiang)風(feng)(feng)(feng)速等。7測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)地(di)點(dian)(dian)(dian)(dian)(dian)：8測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)人(ren)(ren)員：9測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)時(shi)(shi)間：10測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)：附上(shang)(shang)(shang)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)布(bu)置(zhi)(zhi)(zhi)圖(tu)(tu)(tu)(tu)11測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀器(qi)系統圖(tu)(tu)(tu)(tu)：12測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)記(ji)錄表(biao)(biao)：見(jian)附表(biao)(biao)1，即(ji)(ji)噪(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)特性測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)定(ding)(ding)(ding)結(jie)果(guo)(guo)(guo)。并(bing)在(zai)(zai)(zai)倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)評(ping)價(jia)(jia)(jia)(jia)(jia)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)上(shang)(shang)(shang)選(xuan)代表(biao)(biao)性的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)(dian)繪(hui)(hui)出(chu)(chu)倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)中(zhong)心頻(pin)(pin)率(lv)與(yu)(yu)(yu)倍(bei)(bei)(bei)頻(pin)(pin)程(cheng)(cheng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)級(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)曲(qu)(qu)(qu)(qu)線(xian)(xian)(xian)(xian)(xian)(xian)。13分(fen)(fen)(fen)(fen)(fen)(fen)析與(yu)(yu)(yu)建議：對(dui)(dui)(dui)(dui)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)定(ding)(ding)(ding)結(jie)果(guo)(guo)(guo)與(yu)(yu)(yu)國(guo)(guo)內(nei)外同(tong)(tong)類型(xing)(xing)(xing)冷(leng)(leng)(leng)(leng)(leng)卻(que)(que)(que)(que)(que)(que)(que)(que)(que)塔(ta)(ta)(ta)(ta)(ta)(ta)(ta)(ta)進(jin)(jin)(jin)行(xing)比(bi)(bi)較(jiao)，作(zuo)出(chu)(chu)評(ping)價(jia)(jia)(jia)(jia)(jia)及(ji)(ji)提出(chu)(chu)建議。對(dui)(dui)(dui)(dui)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)中(zhong)出(chu)(chu)現(xian)或(huo)(huo)(huo)存在(zai)(zai)(zai)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)問題進(jin)(jin)(jin)行(xing)分(fen)(fen)(fen)(fen)(fen)(fen)析。