環(huan)(huan)(huan)境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)已成為廢水(shui)、廢氣、廢渣(zha)外的第四大公害。環(huan)(huan)(huan)境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)影響人們的工作、學習(xi)和(he)休息，據統計(ji)，環(huan)(huan)(huan)境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)的投(tou)訴占環(huan)(huan)(huan)境投(tou)訴的六(liu)成以上。為了防治(zhi)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)污染，提高人民的聲(sheng)(sheng)(sheng)環(huan)(huan)(huan)境質量(liang)，國(guo)家(jia)制定了《環(huan)(huan)(huan)境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)污染防治(zhi)法》，以及(ji)GB 3096-2008《聲(sheng)(sheng)(sheng)環(huan)(huan)(huan)境質量(liang)標(biao)準(zhun)》、GB 12348-2008《工業企業廠界環(huan)(huan)(huan)境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)排放標(biao)準(zhun)》、GB 22337-2008《社會生活環(huan)(huan)(huan)境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)排放標(biao)準(zhun)》和(he)GB 12523-2011《建(jian)筑施工場界環(huan)(huan)(huan)境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)排放限(xian)值》等國(guo)家(jia)標(biao)準(zhun)。

    環境噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)主要(yao)的(de)(de)評價量是平(ping)均A計(ji)權聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)或(huo)叫等(deng)效連續A聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)，記為LAeq，測(ce)(ce)量時需(xu)使用(yong)積(ji)分平(ping)均聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)計(ji)。在聲(sheng)(sheng)(sheng)(sheng)功(gong)能(neng)區噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)監(jian)測(ce)(ce)中，由于(yu)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)起(qi)伏變化較大，還需(xu)要(yao)測(ce)(ce)量累計(ji)百分聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)L10、L50和L90，以及(ji)24小時監(jian)測(ce)(ce)的(de)(de)晝間等(deng)效聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)Ld、夜(ye)間等(deng)效聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)Ln和晝夜(ye)等(deng)效聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)Ldn。在GB 3222標準(zhun)中對(dui)于(yu)交通(tong)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)還要(yao)測(ce)(ce)量L5和L95。累計(ji)百分聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)測(ce)(ce)量需(xu)要(yao)使用(yong)具有統計(ji)分析功(gong)能(neng)的(de)(de)多用(yong)途聲(sheng)(sheng)(sheng)(sheng)級(ji)(ji)(ji)計(ji)或(huo)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)統計(ji)分析儀。

    環境噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)的測(ce)量一般只(zhi)需(xu)要(yao)使用滿足2級(ji)(ji)聲(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)計要(yao)求(qiu)的噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)量儀(yi)(yi)(yi)器(qi)(qi)，但是在(zai)上述標準(zhun)中(zhong)規定(ding)：當噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)A聲(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)低(di)于35dB時，需(xu)要(yao)使用滿足1級(ji)(ji)聲(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)計要(yao)求(qiu)的噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)測(ce)量儀(yi)(yi)(yi)器(qi)(qi)。當固(gu)定(ding)設備排放的噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)通過建筑物(wu)結構傳播至噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)敏感(gan)建筑物(wu)室內(nei)時（主要(yao)是低(di)頻(pin)(pin)(pin)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)），在(zai)GB 12348-2008和GB 22337-2008中(zhong)還規定(ding)：噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)敏感(gan)建筑物(wu)室內(nei)不僅要(yao)測(ce)量等效聲(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)LAeq，還要(yao)測(ce)量中(zhong)心頻(pin)(pin)(pin)率(lv)為31.5 Hz、63 Hz、125 Hz、250 Hz和500 Hz的倍頻(pin)(pin)(pin)帶聲(sheng)(sheng)(sheng)(sheng)(sheng)壓級(ji)(ji)，而且(qie)都不能(neng)超過規定(ding)值。這就需(xu)要(yao)頻(pin)(pin)(pin)譜分(fen)析儀(yi)(yi)(yi)，而實時頻(pin)(pin)(pin)譜分(fen)析儀(yi)(yi)(yi)是適合選擇。申(shen)貝科學儀(yi)(yi)(yi)器(qi)(qi)提供的AWA6228+(1級(ji)(ji))和AWA5688（2級(ji)(ji)）環境(jing)噪聲(sheng)檢(jian)測(ce)儀滿足上述要求，該聲(sheng)級計采用模塊化(hua)設計，用戶可(ke)根據實際需要。

    AWA6228+環(huan)境(jing)噪聲檢測儀是采用(yong)數(shu)字信號處理(li)技術的新一代噪(zao)聲測量儀器。該儀器符合聲級計GB/T 3785.1-2010 /IEC61672-1:2013  1級標(biao)準(zhun)和濾波器GB/T 3241-2010 /IEC 61260-1:2014  1級標(biao)準(zhun)。可(ke)以同時進行積分測(ce)量(liang)、統計(ji)分析、1/1 OCT分析、1/3 OCT分析、FFT分析、個人聲暴露(lu)、混響時間的測(ce)量(liang)。

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