環(huan)境(jing)(jing)噪(zao)(zao)聲(sheng)(sheng)(sheng)已成(cheng)為廢水、廢氣、廢渣外的(de)第四大公(gong)害。環(huan)境(jing)(jing)噪(zao)(zao)聲(sheng)(sheng)(sheng)影響人們的(de)工作、學習和休息，據統(tong)計，環(huan)境(jing)(jing)噪(zao)(zao)聲(sheng)(sheng)(sheng)的(de)投訴占環(huan)境(jing)(jing)投訴的(de)六成(cheng)以上。為了防(fang)治(zhi)噪(zao)(zao)聲(sheng)(sheng)(sheng)污(wu)染(ran)，提高人民的(de)聲(sheng)(sheng)(sheng)環(huan)境(jing)(jing)質(zhi)量(liang)，國(guo)家制定(ding)了《環(huan)境(jing)(jing)噪(zao)(zao)聲(sheng)(sheng)(sheng)污(wu)染(ran)防(fang)治(zhi)法》，以及(ji)GB 3096-2008《聲(sheng)(sheng)(sheng)環(huan)境(jing)(jing)質(zhi)量(liang)標(biao)(biao)準(zhun)(zhun)》、GB 12348-2008《工業企業廠界環(huan)境(jing)(jing)噪(zao)(zao)聲(sheng)(sheng)(sheng)排(pai)放標(biao)(biao)準(zhun)(zhun)》、GB 22337-2008《社會生活環(huan)境(jing)(jing)噪(zao)(zao)聲(sheng)(sheng)(sheng)排(pai)放標(biao)(biao)準(zhun)(zhun)》和GB 12523-2011《建(jian)筑施(shi)工場(chang)界環(huan)境(jing)(jing)噪(zao)(zao)聲(sheng)(sheng)(sheng)排(pai)放限(xian)值》等(deng)國(guo)家標(biao)(biao)準(zhun)(zhun)。

    環境噪聲(sheng)(sheng)(sheng)(sheng)主要(yao)的評(ping)價量(liang)(liang)是(shi)平均A計(ji)權聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)或(huo)(huo)叫等(deng)效(xiao)連續(xu)A聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)，記為LAeq，測量(liang)(liang)時(shi)需(xu)使(shi)用(yong)積分(fen)(fen)平均聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)計(ji)。在(zai)聲(sheng)(sheng)(sheng)(sheng)功(gong)能區噪聲(sheng)(sheng)(sheng)(sheng)監測中(zhong)(zhong)，由(you)于(yu)噪聲(sheng)(sheng)(sheng)(sheng)起(qi)伏變化較大，還需(xu)要(yao)測量(liang)(liang)累計(ji)百分(fen)(fen)聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)L10、L50和L90，以及(ji)24小時(shi)監測的晝間(jian)等(deng)效(xiao)聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)Ld、夜間(jian)等(deng)效(xiao)聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)Ln和晝夜等(deng)效(xiao)聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)Ldn。在(zai)GB 3222標準中(zhong)(zhong)對(dui)于(yu)交(jiao)通噪聲(sheng)(sheng)(sheng)(sheng)還要(yao)測量(liang)(liang)L5和L95。累計(ji)百分(fen)(fen)聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)測量(liang)(liang)需(xu)要(yao)使(shi)用(yong)具(ju)有統計(ji)分(fen)(fen)析功(gong)能的多用(yong)途聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)(ji)計(ji)或(huo)(huo)噪聲(sheng)(sheng)(sheng)(sheng)統計(ji)分(fen)(fen)析儀。

    環境(jing)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)測(ce)(ce)量一般只(zhi)需(xu)要使(shi)用(yong)(yong)滿足(zu)2級聲(sheng)(sheng)(sheng)(sheng)級計(ji)要求的(de)(de)(de)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)測(ce)(ce)量儀器(qi)，但是(shi)在(zai)上述標準中(zhong)規定(ding)：當噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)A聲(sheng)(sheng)(sheng)(sheng)級低(di)于(yu)35dB時，需(xu)要使(shi)用(yong)(yong)滿足(zu)1級聲(sheng)(sheng)(sheng)(sheng)級計(ji)要求的(de)(de)(de)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)測(ce)(ce)量儀器(qi)。當固定(ding)設備排放的(de)(de)(de)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)通過建筑物(wu)結構傳播至噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)敏(min)感(gan)建筑物(wu)室內時（主要是(shi)低(di)頻(pin)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)），在(zai)GB 12348-2008和GB 22337-2008中(zhong)還(huan)規定(ding)：噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)敏(min)感(gan)建筑物(wu)室內不(bu)僅要測(ce)(ce)量等效聲(sheng)(sheng)(sheng)(sheng)級LAeq，還(huan)要測(ce)(ce)量中(zhong)心頻(pin)率為31.5 Hz、63 Hz、125 Hz、250 Hz和500 Hz的(de)(de)(de)倍(bei)頻(pin)帶聲(sheng)(sheng)(sheng)(sheng)壓級，而且都不(bu)能(neng)超過規定(ding)值。這就需(xu)要頻(pin)譜分析(xi)儀，而實(shi)時頻(pin)譜分析(xi)儀是(shi)適合選擇。申貝科(ke)學儀器(qi)提供(gong)的(de)(de)(de)AWA6228+(1級)和AWA5688（2級）環境噪聲檢測儀(yi)滿足上述要求(qiu)，該聲級(ji)計采用模塊化設計，用戶可根據實際需要。

    AWA6228+環境(jing)噪聲(sheng)檢(jian)測儀是采用數字信號處理(li)技術的新一代噪聲測量儀器。該(gai)儀器(qi)符合(he)聲級(ji)計(ji)GB/T 3785.1-2010 /IEC61672-1:2013  1級(ji)標準(zhun)和濾波器(qi)GB/T 3241-2010 /IEC 61260-1:2014  1級(ji)標準(zhun)。可(ke)以(yi)同(tong)時進行積分(fen)(fen)測量、統計分(fen)(fen)析、1/1 OCT分(fen)(fen)析、1/3 OCT分(fen)(fen)析、FFT分(fen)(fen)析、個人聲暴露、混響時間的測量。

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