Cov khoom siv suab nrov rau qhov ntsuas ntawm acoustic thiab suab nrov ib puag ncig
Txhawm rau piv ntsuas cov kev ntsuas suab ua hauv ntau lub teb chaws thoob ntiaj teb, kev tsim kho thoob ntiaj teb thiab pom zoo lawv cov tebchaws. Thaum Lub Tsib Hlis 1979, IEC651 "Suab Qib" tus qauv hauv lub teb chaws yog Greatch "}" Kev Ua Haujlwm Hluav Taws Xob thiab kev sim suab rau qib suab ". Xyoo 1984, iEC dhau rau International tus txheej txheem iec8044 "Infullal nruab nrab kev pom theem nrab"}} " Xyoo 2002, International Electrototechnical Commission (IEC) tso tawm cov txheej txheem tshiab thoob ntiaj teb i6 {8}} "lub suab qib". Cov qauv no hloov cov qub iec {651-1979 "lub suab ntsuas" thiab iec {} "Nruab Nrab Nruab Nrab Suab Theem". Tuam Tshoj tau tsim cov jjg 188-2002 "lub suab ntsuas" kev coj ua pov thawj raws li cov qauv no. Raws li cov qauv tshiab, cov suab me me yuav raug cais tawm cov kev ntsuas theem dav dav, thiab lwm yam. Cov ntsuas ntau yam kev ua tau zoo ntawm ob theem ntawm ob theem muaj qhov ua yuam kev ib yam nkaus xwb, thiab raws li theem tus naj npawb nce yog so. Raws li ntim, nws kuj tuaj yeem muab faib ua desktop, Portable, thiab hnab tshos lub suab qib meters. Raws li nws txoj kev taw qhia, nws tuaj yeem muab faib ua analog taw qhia thiab cov duab ntsuas ntsuas ntsuas me me.
