吸(xi)(xi)聲(sheng)(sheng)：當(dang)聲(sheng)(sheng)波(bo)(bo)入射到物(wu)體表面時，部分(fen)聲(sheng)(sheng)能(neng)要(yao)(yao)被(bei)物(wu)體吸(xi)(xi)收轉化為其(qi)他形式的(de)能(neng)量，稱為吸(xi)(xi)聲(sheng)(sheng)。材(cai)(cai)料(liao)(liao)的(de)吸(xi)(xi)聲(sheng)(sheng)性(xing)(xing)能(neng)用吸(xi)(xi)收系數來表示，吸(xi)(xi)聲(sheng)(sheng)系數越大，則表示材(cai)(cai)料(liao)(liao)的(de)吸(xi)(xi)聲(sheng)(sheng)性(xing)(xing)能(neng)越好(hao)。材(cai)(cai)料(liao)(liao)的(de)吸(xi)(xi)聲(sheng)(sheng)性(xing)(xing)能(neng)與材(cai)(cai)料(liao)(liao)的(de)性(xing)(xing)質、結構和聲(sheng)(sheng)波(bo)(bo)的(de)入射角度及聲(sheng)(sheng)波(bo)(bo)的(de)頻率有關(guan)。多孔(kong)(kong)(kong)(kong)吸(xi)(xi)聲(sheng)(sheng)材(cai)(cai)料(liao)(liao)的(de)吸(xi)(xi)聲(sheng)(sheng)機(ji)理是：材(cai)(cai)料(liao)(liao)內(nei)部有無數細(xi)小(xiao)的(de)相互貫通的(de)孔(kong)(kong)(kong)(kong)洞，當(dang)聲(sheng)(sheng)波(bo)(bo)入射到這些材(cai)(cai)料(liao)(liao)的(de)表面，進而(er)入射到這些細(xi)小(xiao)的(de)孔(kong)(kong)(kong)(kong)隙內(nei)時，要(yao)(yao)引(yin)起孔(kong)(kong)(kong)(kong)隙內(nei)的(de)空氣運(yun)動，緊靠孔(kong)(kong)(kong)(kong)壁和纖(xian)維表面的(de)空氣，車間(jian)降噪設(she)備(bei)廠，因摩擦和粘滯(zhi)運(yun)動阻力而(er)不(bu)易運(yun)動，使聲(sheng)(sheng)能(neng)轉化為熱能(neng)而(er)消耗掉。故性(xing)(xing)能(neng)良好(hao)的(de)吸(xi)(xi)聲(sheng)(sheng)材(cai)(cai)料(liao)(liao)要(yao)(yao)多孔(kong)(kong)(kong)(kong)，孔(kong)(kong)(kong)(kong)與孔(kong)(kong)(kong)(kong)之間(jian)互相貫通，并且(qie)貫通的(de)孔(kong)(kong)(kong)(kong)洞要(yao)(yao)與外界連通，使聲(sheng)(sheng)波(bo)(bo)能(neng)進入材(cai)(cai)料(liao)(liao)內(nei)部。

地面(mian)箱式變(bian)壓器(qi)噪音(yin)(yin)治(zhi)(zhi)理(li)：治(zhi)(zhi)理(li)方(fang)案：首先對(dui)變(bian)壓器(qi)進(jin)行(xing)(xing)停電后的檢(jian)修，包(bao)括進(jin)行(xing)(xing)更換(huan)陳舊(jiu)的變(bian)壓器(qi)油，對(dui)變(bian)壓器(qi)緊固(gu)件(jian)進(jin)行(xing)(xing)檢(jian)查，對(dui)變(bian)壓器(qi)進(jin)行(xing)(xing)除塵等；其次對(dui)變(bian)壓器(qi)基礎(chu)進(jin)行(xing)(xing)加固(gu)或(huo)者加裝(zhuang)隔(ge)震(zhen)裝(zhuang)置，隔(ge)震(zhen)裝(zhuang)置可以(yi)根據振動的大小程度選擇橡膠墊(dian)或(huo)者彈簧減振器(qi)進(jin)行(xing)(xing)；后由于箱變(bian)的外(wai)殼都比較單薄(bo)，對(dui)其外(wai)殼進(jin)行(xing)(xing)隔(ge)音(yin)(yin)加固(gu)比較困難，且位置空間(jian)較小，所以(yi)箱變(bian)的噪音(yin)(yin)治(zhi)(zhi)理(li)方(fang)法(fa)是(shi)在(zai)其外(wai)側(ce)加設隔(ge)音(yin)(yin)屏障(zhang)或(huo)者隔(ge)音(yin)(yin)罩。

在工(gong)業生(sheng)產(chan)中(zhong)，水(shui)泥(ni)廠產(chan)生(sheng)的(de)噪(zao)(zao)聲(sheng)(sheng)是相(xiang)對高(gao)強度的(de)噪(zao)(zao)聲(sheng)(sheng)。由于水(shui)泥(ni)廠中(zhong)的(de)機器(qi)設(she)備比(bi)較多，噪(zao)(zao)聲(sheng)(sheng)治(zhi)理存在一定程度的(de)困(kun)難。如果噪(zao)(zao)音(yin)污染不及時解決(jue)，長時間在高(gao)強度噪(zao)(zao)音(yin)下工(gong)作的(de)工(gong)人的(de)身(shen)體健康將嚴重受到影響，并且附近居民的(de)正常休息也會(hui)受到干擾。水(shui)泥(ni)廠一旦出(chu)現噪(zao)(zao)音(yin)問題，就應該立(li)即采(cai)取(qu)相(xiang)應措(cuo)施予以處理。在提出(chu)具體的(de)噪(zao)(zao)聲(sheng)(sheng)控制措(cuo)施之前，的(de)是找到準確(que)的(de)噪(zao)(zao)聲(sheng)(sheng)源。