聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏障(zhang)在(zai)室外是控制交通(tong)(tong)(tong)(tong)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)污染常見的(de)(de)有(you)效(xiao)(xiao)措施，在(zai)交通(tong)(tong)(tong)(tong)干線兩側設置(zhi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏障(zhang)，以降低干線兩側的(de)(de)交通(tong)(tong)(tong)(tong)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。對于聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏障(zhang)設計(ji)，工(gong)(gong)(gong)業降噪(zao)，聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏障(zhang)本身(shen)要(yao)有(you)足夠的(de)(de)隔聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量(liang)，否(fou)則透射聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)過大，就起(qi)不(bu)到(dao)隔聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效(xiao)(xiao)果(guo)。為了防止通(tong)(tong)(tong)(tong)過地板(ban)和墻(qiang)(qiang)(qiang)壁等(deng)(deng)固體(ti)(ti)材(cai)料(liao)傳播的(de)(de)振動噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，在(zai)機器(qi)的(de)(de)基礎(chu)和地板(ban)、墻(qiang)(qiang)(qiang)壁聯結處設減振裝(zhuang)置(zhi)，降噪(zao)工(gong)(gong)(gong)程施工(gong)(gong)(gong)，如膠墊、瀝青等(deng)(deng)。吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)系數(shu)越大，蚌埠降噪(zao)工(gong)(gong)(gong)程，吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)面積越多，吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效(xiao)(xiao)果(guo)越明顯，可以利用吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)天花、吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)墻(qiang)(qiang)(qiang)體(ti)(ti)、空間吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)體(ti)(ti)等(deng)(deng)進(jin)(jin)行吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降噪(zao)。消聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)技術主要(yao)用于降低管道中(zhong)傳播的(de)(de)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。消聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)就是一種(zhong)能(neng)讓氣(qi)流(liu)或(huo)水(shui)流(liu)通(tong)(tong)(tong)(tong)過，使噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)衰減的(de)(de)裝(zhuang)置(zhi)，通(tong)(tong)(tong)(tong)常安裝(zhuang)在(zai)管道中(zhong)或(huo)進(jin)(jin)、排口上，可有(you)效(xiao)(xiao)降低從(cong)空氣(qi)中(zhong)或(huo)水(shui)流(liu)中(zhong)傳傳播的(de)(de)動力性(xing)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。

阻(zu)性消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)是(shi)(shi)zui常(chang)用(yong)的(de)(de)一(yi)種消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)，它是(shi)(shi)一(yi)種吸(xi)收型消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)，即(ji)利用(yong)聲(sheng)(sheng)(sheng)波在(zai)多孔(kong)而且串(chuan)1通(tong)的(de)(de)吸(xi)聲(sheng)(sheng)(sheng)材料(liao)中，因摩擦和粘滯阻(zu)力，將聲(sheng)(sheng)(sheng)能(neng)(neng)轉化為熱能(neng)(neng)耗散掉，從而達到(dao)消(xiao)聲(sheng)(sheng)(sheng)的(de)(de)目的(de)(de)。降(jiang)(jiang)噪(zao)(zao)，顧名思義就是(shi)(shi)減少(shao)噪(zao)(zao)音對(dui)人的(de)(de)影響。常(chang)用(yong)的(de)(de)方法有：1、隔聲(sheng)(sheng)(sheng)房；2、安裝消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)；3、隔聲(sheng)(sheng)(sheng)屏障；4、減振等。消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)是(shi)(shi)一(yi)種既能(neng)(neng)使氣流通(tong)過(guo)又能(neng)(neng)有效(xiao)地(di)降(jiang)(jiang)低(di)噪(zao)(zao)聲(sheng)(sheng)(sheng)的(de)(de)設備。通(tong)常(chang)可用(yong)消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)降(jiang)(jiang)低(di)各種空氣動力設備的(de)(de)進出口或沿管(guan)道傳(chuan)遞的(de)(de)噪(zao)(zao)聲(sheng)(sheng)(sheng)。

聲(sheng)的輻射(she)一般有指向(xiang)(xiang)性(xing)，處(chu)在與聲(sheng)源距離相同(tong)(tong)而方(fang)向(xiang)(xiang)不同(tong)(tong)的地方(fang)，接收到的聲(sheng)強(qiang)度也(ye)就不同(tong)(tong)。不過多數聲(sheng)源以低(di)頻輻射(she)噪聲(sheng)時，指向(xiang)(xiang)性(xing)很差；隨著頻率(lv)的增加，指向(xiang)(xiang)性(xing)就增強(qiang)。隔聲(sheng)門表(biao)面結構為鋼制，設置(zhi)門檻，門體與門框、門鎖孔(kong)洞等(deng)均進行(xing)細(xi)節密(mi)封，門扇面密(mi)度大，整體質量高。室外使用(yong)聲(sheng)屏障時，可(ke)用(yong)磚墻(qiang)(qiang)、混凝土墻(qiang)(qiang);室內使用(yong)時，可(ke)用(yong)鋼板、木板、塑料(liao)板、石膏板以及復合板等(deng)輕質材料(liao)。