Standard rau Noise Meters
Txhawm rau ua kom cov txiaj ntsig ntawm cov ntsuas suab ntsuas tau tsim nyob hauv ntau lub tebchaws hauv ntiaj teb sib piv nrog ib leeg, International Electrotechnical Commission (IEC) tau tsim cov qauv tsim nyog rau cov ntsuas suab ntsuas thiab pom zoo kom cov teb chaws txais lawv. Thaum lub Tsib Hlis 1979, IEC651 "Sound Level Meter" tau dhau los hauv Stockholm. Standard, Tuam Tshoj lub teb chaws tus qauv rau lub suab ntsuas ntsuas yog GB3785-83 "Sound Level Meter Electrical thiab Acoustic Properties and Test Methods". Xyoo 1984, IEC dhau qhov IEC804 "Integrated Nruab Nrab Suab Qib Meter" thoob ntiaj teb tus qauv, thiab xyoo 1997 Tuam Tshoj tshaj tawm GB / T17181-1997 "Integrated Nruab Nrab Suab Qib Meter". Lawv ua raws li cov cai tseem ceeb ntawm IEC tus qauv. Xyoo 2002, International Electrotechnical Commission (IEC) tau tshaj tawm tus qauv tshiab thoob ntiaj teb rau IEC 61672-2002 "Sound Level Meter". Cov qauv no hloov qhov qub IEC651-1979 "Sound Level Meter" thiab IEC{10}} "Integrated Nruab Nrab Suab Level Meter". Raws li tus qauv no, Tuam Tshoj tau tsim JJG188-2002 "Sound Level Meter" cov cai pov thawj. Raws li tus qauv tshiab, lub suab ntsuas ntsuas tuaj yeem muab faib ua lub suab ntsuas dav dav, lub suab ntsuas lub suab ntsuas, spectrum suab qib ntsuas, thiab lwm yam raws li lub hom phiaj, thiab tuaj yeem muab faib ua 1 thiab 2 raws li qhov tseeb. Cov ntsuas kev ua tau zoo muaj qhov tseem ceeb hauv nruab nrab, tsuas yog qhov kam rau ua qhov sib txawv, thiab kev kam rau siab tau so thaum tus lej nce. Raws li qhov ntim kuj tuaj yeem muab faib ua desktop, portable, thiab hnab tshos suab qib ntsuas. Raws li nws txoj kev taw qhia, nws tuaj yeem muab faib ua analog indication thiab digital indication sound level meter.
