'人(ren)耳聽到的(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)為直達聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)與混(hun)響(xiang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)疊加。如果在室內天花、墻壁、地(di)板和隔聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏障的(de)吸(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)部(bu)分等(deng)(deng)界面布(bu)置吸(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料或(huo)(huo)吸(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)構造，吸(xi)(xi)(xi)(xi)收掉(diao)部(bu)分反射(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能，可使得(de)混(hun)響(xiang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)減弱，這就是吸(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降(jiang)噪(zao)(zao)(zao)的(de)原理。在傳音(yin)途徑上降(jiang)低(di)噪(zao)(zao)(zao)音(yin)，控(kong)制噪(zao)(zao)(zao)音(yin)的(de)傳播，安徽冷卻(que)塔降(jiang)噪(zao)(zao)(zao)，改聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)已經(jing)發出的(de)噪(zao)(zao)(zao)音(yin)傳播途徑，如采用(yong)吸(xi)(xi)(xi)(xi)音(yin)、隔音(yin)、音(yin)屏障、隔振等(deng)(deng)措施(shi)，以及合理規(gui)劃城市和建筑(zhu)布(bu)局等(deng)(deng)。噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)控(kong)制要從聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)、傳播途徑上進行綜合治(zhi)理。在噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)達到受聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點(dian)之(zhi)前(qian)，冷卻(que)塔降(jiang)噪(zao)(zao)(zao)處(chu)理公司，采用(yong)阻尼(ni)、隔聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)、吸(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)和建筑(zhu)布(bu)局等(deng)(deng)措施(shi)，盡力降(jiang)低(di)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)的(de)振動(dong)，或(huo)(huo)者(zhe)將(jiang)傳播中的(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能吸(xi)(xi)(xi)(xi)收掉(diao)，或(huo)(huo)者(zhe)設置障礙，使聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)全部(bu)或(huo)(huo)部(bu)分反射(she)出去(qu)。

環境噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)污(wu)染(ran)一(yi)般(ban)是(shi)由聲(sheng)(sheng)(sheng)(sheng)源、傳播途徑(jing)和(he)受主三(san)個基本(ben)環節組成(cheng)的(de)。因(yin)此，噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)治理必須把這三(san)個環節作為一(yi)個系統進行研究。人耳(er)聽到的(de)聲(sheng)(sheng)(sheng)(sheng)音為直達(da)聲(sheng)(sheng)(sheng)(sheng)與(yu)混響(xiang)聲(sheng)(sheng)(sheng)(sheng)的(de)疊加。如果在室(shi)內天花、墻壁、地板和(he)隔聲(sheng)(sheng)(sheng)(sheng)屏障(zhang)的(de)吸(xi)聲(sheng)(sheng)(sheng)(sheng)部分(fen)等界面布(bu)置吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)或吸(xi)聲(sheng)(sheng)(sheng)(sheng)構造(zao)，吸(xi)收掉(diao)部分(fen)反射聲(sheng)(sheng)(sheng)(sheng)能，冷(leng)卻塔降噪(zao)(zao)處理，可使(shi)得混響(xiang)聲(sheng)(sheng)(sheng)(sheng)減弱，冷(leng)卻塔降噪(zao)(zao)公司，這就是(shi)吸(xi)聲(sheng)(sheng)(sheng)(sheng)降噪(zao)(zao)的(de)原理。隔聲(sheng)(sheng)(sheng)(sheng)屏障(zhang)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)衰減量計算方(fang)法很多(duo)，但較(jiao)為獲得一(yi)致(zhi)認同的(de)方(fang)法是(shi)：根據(ju)隔聲(sheng)(sheng)(sheng)(sheng)屏障(zhang)的(de)高度，以及聲(sheng)(sheng)(sheng)(sheng)源和(he)受聲(sheng)(sheng)(sheng)(sheng)點的(de)位置。

'噪(zao)聲(sheng)(sheng)(sheng)影響睡(shui)眠的(de)數量和(he)質量。研究(jiu)表明，在40～50dB噪(zao)聲(sheng)(sheng)(sheng)作用(yong)下，會干(gan)擾正常(chang)的(de)睡(shui)眠。降低(di)聲(sheng)(sheng)(sheng)源(yuan)的(de)噪(zao)聲(sheng)(sheng)(sheng)，在工業(ye)、交通(tong)運輸(shu)業(ye)上都可以選擇采用(yong)低(di)噪(zao)聲(sheng)(sheng)(sheng)的(de)生產(chan)設備和(he)改(gai)進生產(chan)的(de)工藝(yi)，或者改(gai)變噪(zao)聲(sheng)(sheng)(sheng)源(yuan)的(de)運動方(fang)式(比如使(shi)用(yong)阻尼(ni)、隔(ge)(ge)振等措(cuo)施，來降低(di)固體發聲(sheng)(sheng)(sheng)體的(de)振動)。不論使(shi)用(yong)廣(guang)泛還是隔(ge)(ge)音(yin)(yin)(yin)棉和(he)隔(ge)(ge)音(yin)(yin)(yin)氈等容(rong)易裝修的(de)隔(ge)(ge)音(yin)(yin)(yin)材料(liao)，在噪(zao)音(yin)(yin)(yin)治理時無論使(shi)用(yong)哪種隔(ge)(ge)音(yin)(yin)(yin)材料(liao)只要能達到噪(zao)音(yin)(yin)(yin)治理目的(de)的(de)就是正確的(de)隔(ge)(ge)音(yin)(yin)(yin)措(cuo)施。'