聲(sheng)(sheng)(sheng)屏障(zhang)在室(shi)外(wai)是(shi)控制(zhi)交通(tong)噪(zao)聲(sheng)(sheng)(sheng)污(wu)染(ran)常見的(de)(de)有效(xiao)(xiao)措施，降噪(zao)施工(gong)，在交通(tong)干(gan)線兩側設置(zhi)聲(sheng)(sheng)(sheng)屏障(zhang)，以(yi)降低干(gan)線兩側的(de)(de)交通(tong)噪(zao)聲(sheng)(sheng)(sheng)。對(dui)(dui)于(yu)聲(sheng)(sheng)(sheng)屏障(zhang)設計，聲(sheng)(sheng)(sheng)屏障(zhang)本身(shen)要有足夠的(de)(de)隔聲(sheng)(sheng)(sheng)量，否則透射(she)聲(sheng)(sheng)(sheng)能過大，就起(qi)(qi)不到隔聲(sheng)(sheng)(sheng)效(xiao)(xiao)果(guo)。固體聲(sheng)(sheng)(sheng)能傳播到很(hen)(hen)遠的(de)(de)地(di)方(fang)，即(ji)隨著(zhu)距(ju)離的(de)(de)增(zeng)加(jia)(jia)衰減(jian)很(hen)(hen)小。對(dui)(dui)于(yu)因基礎向外(wai)傳遞振(zhen)(zhen)動而產(chan)生的(de)(de)固體聲(sheng)(sheng)(sheng)可采取隔振(zhen)(zhen)方(fang)法(fa)加(jia)(jia)以(yi)控制(zhi)，而對(dui)(dui)于(yu)機(ji)組表面振(zhen)(zhen)動向外(wai)輻射(she)的(de)(de)噪(zao)聲(sheng)(sheng)(sheng)可以(yi)利(li)用阻尼減(jian)振(zhen)(zhen)的(de)(de)辦法(fa)加(jia)(jia)以(yi)控制(zhi)。噪(zao)聲(sheng)(sheng)(sheng)對(dui)(dui)人(ren)體的(de)(de)危害是(shi)全身(shen)性的(de)(de)，既可以(yi)引起(qi)(qi)聽(ting)覺系統(tong)的(de)(de)變化，也可以(yi)對(dui)(dui)非聽(ting)覺系統(tong)產(chan)生影響。這些影響的(de)(de)早期主要是(shi)生理(li)性改變，長期接觸比較強烈的(de)(de)噪(zao)聲(sheng)(sheng)(sheng)，可以(yi)引起(qi)(qi)病理(li)性改變。

吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)技術通常用于降低室(shi)內的(de)(de)混響聲(sheng)(sheng)(sheng)(sheng)(sheng)，當室(shi)內天(tian)花板(ban)、四周墻面(mian)或空(kong)間安裝、懸掛有(you)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)體時，聲(sheng)(sheng)(sheng)(sheng)(sheng)波入(ru)射到這(zhe)些材料(liao)(liao)的(de)(de)表面(mian)上(shang)會進入(ru)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)的(de)(de)孔隙，從而引(yin)起孔隙中的(de)(de)空(kong)氣(qi)(qi)和(he)材料(liao)(liao)的(de)(de)細(xi)小(xiao)纖維振(zhen)動，室(shi)外空(kong)調(diao)隔音降噪(zao)(zao)工(gong)程，由于摩擦和(he)粘(zhan)滯阻力(li)，聲(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)轉變(bian)為熱能(neng)，而被(bei)吸(xi)(xi)收和(he)耗散掉，蚌埠降噪(zao)(zao)工(gong)程，吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)的(de)(de)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)性能(neng)愈(yu)(yu)好、面(mian)積(ji)愈(yu)(yu)大(da)，降噪(zao)(zao)效果愈(yu)(yu)好。機械設(she)備(bei)運轉產(chan)生的(de)(de)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)其傳(chuan)播方式有(you)兩種(zhong)(zhong)：一(yi)種(zhong)(zhong)是(shi)在空(kong)氣(qi)(qi)中傳(chuan)播，稱為空(kong)氣(qi)(qi)聲(sheng)(sheng)(sheng)(sheng)(sheng)；另一(yi)種(zhong)(zhong)是(shi)聲(sheng)(sheng)(sheng)(sheng)(sheng)源激發固體構(gou)件振(zhen)動，環保(bao)降噪(zao)(zao)工(gong)程公(gong)司，這(zhe)種(zhong)(zhong)振(zhen)動以彈性波的(de)(de)形式，通過基(ji)礎、廠(chang)房地板(ban)、墻柱、機組表面(mian)向外輻(fu)射噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)，即(ji)固體聲(sheng)(sheng)(sheng)(sheng)(sheng)。長期接觸較強(qiang)烈的(de)(de)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)引(yin)起聽覺(jue)器1官損傷的(de)(de)變(bian)化(hua)一(yi)般是(shi)從暫時性聽閾位(wei)移逐漸發展(zhan)為永(yong)1久性聽閾位(wei)移。

降(jiang)噪處(chu)理措(cuo)施(shi)：阻(zu)尼、隔振(zhen)消聲(sheng)(sheng)(sheng)(sheng)(sheng)：阻(zu)尼涂料(liao)或阻(zu)尼片(pian)涂貼在(zai)設備(bei)(bei)或管道壁上，減少設備(bei)(bei)、管壁的振(zhen)動(dong)；隔振(zhen)是在(zai)噪聲(sheng)(sheng)(sheng)(sheng)(sheng)源的基礎、地面及(ji)墻壁等處(chu)裝(zhuang)設減振(zhen)裝(zhuang)置(zhi)或防振(zhen)結(jie)(jie)構(gou)。具有(you)較好吸聲(sheng)(sheng)(sheng)(sheng)(sheng)效果的材(cai)料(liao)有(you)玻璃(li)棉(mian)、礦渣棉(mian)、泡沫塑料(liao)、毛氈、棉(mian)絮、加氣混凝土、吸聲(sheng)(sheng)(sheng)(sheng)(sheng)板、木絲(si)板等。降(jiang)噪處(chu)理措(cuo)施(shi)：隔聲(sheng)(sheng)(sheng)(sheng)(sheng)：使用隔聲(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)、結(jie)(jie)構(gou)或裝(zhuang)置(zhi)將噪聲(sheng)(sheng)(sheng)(sheng)(sheng)源封(feng)閉起來，如隔聲(sheng)(sheng)(sheng)(sheng)(sheng)卷(juan)材(cai)、聲(sheng)(sheng)(sheng)(sheng)(sheng)屏障、隔聲(sheng)(sheng)(sheng)(sheng)(sheng)間、隔聲(sheng)(sheng)(sheng)(sheng)(sheng)罩、隔聲(sheng)(sheng)(sheng)(sheng)(sheng)門窗等。