隔聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)衰減量計算方(fang)法很(hen)多，但(dan)較為獲得一致認同的(de)(de)(de)方(fang)法是：根據隔聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)的(de)(de)(de)高度，以及聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源和(he)受聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點的(de)(de)(de)位置(zhi)。吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降噪(zao)(zao)是一種(zhong)在傳播途(tu)徑上控制(zhi)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)強度的(de)(de)(de)方(fang)法。物體(ti)的(de)(de)(de)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用是普遍存(cun)在的(de)(de)(de)，吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)效果(guo)不(bu)僅與吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料有關，還與所選的(de)(de)(de)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)結構(gou)有關。這(zhe)種(zhong)技(ji)術主要用于室內(nei)空間(jian)。人耳聽到的(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音為直達聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)與混響聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)疊(die)加。如果(guo)在室內(nei)天花、墻(qiang)壁、地板和(he)隔聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)的(de)(de)(de)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)部(bu)分等界面布(bu)置(zhi)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料或吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)構(gou)造，冷(leng)卻(que)塔降噪(zao)(zao)治理公司，吸(xi)收掉部(bu)分反(fan)射聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能，冷(leng)卻(que)塔降噪(zao)(zao)廠，可使得混響聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)減弱，這(zhe)就是吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降噪(zao)(zao)的(de)(de)(de)原理。

降低(di)聲(sheng)(sheng)源(yuan)噪(zao)(zao)音(yin)，工業、交通運(yun)輸業可以(yi)選用(yong)低(di)噪(zao)(zao)音(yin)的(de)生(sheng)產設備和改進生(sheng)產工藝，或者改變噪(zao)(zao)音(yin)源(yuan)的(de)運(yun)動(dong)(dong)方式(如用(yong)阻尼、隔(ge)振(zhen)等措(cuo)施降低(di)固(gu)體發聲(sheng)(sheng)體的(de)振(zhen)動(dong)(dong))。噪(zao)(zao)聲(sheng)(sheng)的(de)來源(yuan)是非常多(duo)的(de)。在工廠里，發動(dong)(dong)機的(de)運(yun)轉(zhuan)聲(sheng)(sheng)，通風機吸氣或排氣聲(sheng)(sheng)，材料的(de)鋸割、沖壓、切削聲(sheng)(sheng)…使(shi)得一些(xie)工廠成為噪(zao)(zao)聲(sheng)(sheng)污染非常嚴重(zhong)的(de)單位(wei)。隔(ge)聲(sheng)(sheng)屏障噪(zao)(zao)聲(sheng)(sheng)衰減量計算方法(fa)很多(duo)，常州冷卻塔降噪(zao)(zao)，但較為獲得一致認同的(de)方法(fa)是：根據隔(ge)聲(sheng)(sheng)屏障的(de)高(gao)度(du)，以(yi)及聲(sheng)(sheng)源(yuan)和受(shou)聲(sheng)(sheng)點的(de)位(wei)置。

解決噪(zao)音問題的(de)(de)一(yi)般程序(xu)(xu)是(shi)(shi)首(shou)行(xing)現(xian)場噪(zao)聲(sheng)(sheng)(sheng)(sheng)調查，測量現(xian)場的(de)(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)聲(sheng)(sheng)(sheng)(sheng)級和(he)噪(zao)聲(sheng)(sheng)(sheng)(sheng)頻率，電(dian)廠冷卻塔降噪(zao)，分析從(cong)聲(sheng)(sheng)(sheng)(sheng)源(yuan)(yuan)到接收(shou)者的(de)(de)傳輸途徑，對不同(tong)的(de)(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)源(yuan)(yuan)所(suo)產生(sheng)的(de)(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)聲(sheng)(sheng)(sheng)(sheng)級進行(xing)排(pai)序(xu)(xu)量化噪(zao)聲(sheng)(sheng)(sheng)(sheng)問題。噪(zao)聲(sheng)(sheng)(sheng)(sheng)一(yi)部分直接傳播到人耳(er)，稱為直達(da)聲(sheng)(sheng)(sheng)(sheng)；大(da)部分的(de)(de)聲(sheng)(sheng)(sheng)(sheng)能(neng)通過(guo)室(shi)內的(de)(de)各個界(jie)面(mian)多次反射后傳播到達(da)人耳(er)，稱為混響(xiang)聲(sheng)(sheng)(sheng)(sheng)。隔(ge)聲(sheng)(sheng)(sheng)(sheng)屏障噪(zao)聲(sheng)(sheng)(sheng)(sheng)衰減量計算方法(fa)很多，但較為獲得一(yi)致認同(tong)的(de)(de)方法(fa)是(shi)(shi)：根據隔(ge)聲(sheng)(sheng)(sheng)(sheng)屏障的(de)(de)高度，以及(ji)聲(sheng)(sheng)(sheng)(sheng)源(yuan)(yuan)和(he)受聲(sheng)(sheng)(sheng)(sheng)點(dian)的(de)(de)位置。