全封閉聲(sheng)(sheng)(sheng)屏(ping)障屏(ping)體(ti)(ti)使用(yong)的(de)是鍍(du)鋅板(ban)，鋁板(ban)，這種面板(ban)板(ban)材上布(bu)滿小孔，聲(sheng)(sheng)(sheng)波(bo)撞到(dao)(dao)聲(sheng)(sheng)(sheng)屏(ping)障，就有可能(neng)陷到(dao)(dao)孔內(nei)，而板(ban)材中部是*層(ceng)厚(hou)厚(hou)的(de)吸音(yin)棉，噪音(yin)陷進(jin)內(nei)部去不容(rong)易(yi)出來，吸音(yin)棉外敷無堿恨(hen)水(shui)玻璃布(bu)，屏(ping)體(ti)(ti)表面可實施(shi)噴(pen)塑處理，防(fang)腐性強(qiang)，使用(yong)壽命長。

聲(sheng)(sheng)(sheng)(sheng)波(bo)在(zai)(zai)傳播(bo)過(guo)程中(zhong)遇到全封閉(bi)聲(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)時，就應該能產生了反射(she)、透射(she)和(he)繞射(she)三種(zhong)現象。大致屏(ping)(ping)障(zhang)(zhang)能夠阻(zu)止直達聲(sheng)(sheng)(sheng)(sheng)的(de)(de)傳播(bo)，并(bing)使透射(she)聲(sheng)(sheng)(sheng)(sheng)有足夠的(de)(de)衰減(jian)，而(er)透射(she)聲(sheng)(sheng)(sheng)(sheng)的(de)(de)影響可(ke)以忽略(lve)不計。對此，聲(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)的(de)(de)隔聲(sheng)(sheng)(sheng)(sheng)效果(guo)通常(chang)可(ke)采用減(jian)噪(zao)(zao)量表示，它(ta)反映了聲(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)上面介紹兩(liang)種(zhong)屏(ping)(ping)蔽透聲(sheng)(sheng)(sheng)(sheng)的(de)(de)本(ben)領。在(zai)(zai)聲(sheng)(sheng)(sheng)(sheng)源和(he)接(jie)收點之間插入同*個(ge)聲(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)，設(she)屏(ping)(ping)障(zhang)(zhang)無限長，聲(sheng)(sheng)(sheng)(sheng)波(bo)僅能從屏(ping)(ping)障(zhang)(zhang)上方(fang)繞射(she)以前，而(er)在(zai)(zai)其后(hou)形成同*個(ge)聲(sheng)(sheng)(sheng)(sheng)影區，就象光線被物體遮擋形成同*個(ge)陰影那樣。在(zai)(zai)這(zhe)個(ge)聲(sheng)(sheng)(sheng)(sheng)影區內，人們可(ke)以感到噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)明(ming)顯地減(jian)弱了，這(zhe)則是聲(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)的(de)(de)減(jian)噪(zao)(zao)效果(guo)。