Sound Level Meter: Qhov cuam tshuam ntawm ib puag ncig lub suab nrov ntawm ntau yam kev lag luam thiab lub neej txhua hnub
Feem ntau, peb feem ntau xa mus rau lub suab tsis xav ua suab nrov, xws li suab nrov ib puag ncig, suab nrov ntawm kev khiav tsheb, thiab lwm yam. Lub suab ntawm lub piano yog suab paj nruag, tab sis rau cov neeg kawm lossis pw tsaug zog, nws dhau los ua suab nrov.
Raws li cov suab sib txawv, suab nrov tuaj yeem muab faib ua suab nrov, suab nrov aerodynamic, thiab suab nrov electromagnetic. Mechanical suab nrov yog tsim los ntawm cov khoom vibration. Thaum lub tshuab ua haujlwm, vim muaj kev cuam tshuam rau cov khoom siv, kev sib txhuam, kev sib hloov txhua yam kev ntxhov siab, thiab lub zog tsis sib xws thaum lub sijhawm ua haujlwm, cov hlau phaj, lub zog, bearings, thiab lwm yam ntawm cov tshuab vibrate, yog li radiating mechanical suab nrov, xws li suab nrov tsim los ntawm cov cuab yeej tshuab, looms, pob mills, thiab lwm yam. Thaum gases txav ntawm kev kub ceev txheeb ze rau ib leeg los yog lwm yam khoom tshwm sim los ntawm kev cuam tshuam los ntawm cov khoom siv hluav taws xob los yog cov khoom siv hluav taws xob los ntawm cov khoom siv hluav taws xob, cov khoom siv hluav taws xob los yog cov khoom tawg. aerodynamic suab nrov xws li kev noj thiab tso suab nrov ntawm ntau cov kiv cua, lub suab nrov ntawm lub dav hlau ya dav hlau, qhov tso pa tawm ntawm lub tshuab hluav taws xob sab hauv, thiab cov pa tawm ntawm cov roj tso tsheb hlau luam. Kev nthuav dav sai ntawm cov huab cua ib puag ncig los ntawm kev tawg kuj yog lub suab nrov aerodynamic. Electromagnetic nrov yog lub suab nrov uas tsim los ntawm kev co ntawm cov khoom siv hluav taws xob los ntawm kev sib nqus teb pulsation thiab magnetostriction, xws li cov suab nrov uas tsim los ntawm transformers.
Lub nroog ib puag ncig lub suab nrov ua lub luag haujlwm tseem ceeb hauv kev tshawb fawb suab nrov, feem ntau yog los ntawm cov suab nrov nrov, suab nrov hauv kev lag luam, suab nrov ntawm kev tsim kho, thiab suab nrov hauv lub neej. Vim muaj cov tsheb loj zuj zus hauv cov nroog thiab kev siv dav hlau supersonic, lub suab nrov uas tsim los ntawm cov tsheb thauj mus los xws li tsheb, tsheb laij teb, tsheb ciav hlau, dav hlau, thiab lwm yam tau dhau los ua ib qho tseem ceeb ntawm lub nroog ib puag ncig lub suab nrov. Kev lag luam suab nrov tsis tsuas yog ua rau muaj kev hem thawj rau cov neeg ua haujlwm tsim khoom, tab sis kuj cuam tshuam rau cov neeg nyob ze. Hauv kev lag luam suab nrov, theem suab nrov hauv textile factories yog nyob nruab nrab ntawm 90-106dB, thaum nyob rau hauv kev lag luam tshuab nws nyob nruab nrab ntawm 80-120dB. Cov pob zeb loj thiab tshuab tshuab muaj suab nrov tshaj 130dB. Muaj suab nrov yog lub ntsiab ua rau lub suab nrov induced hnov tsis hnov tsw. Kev tsim kho suab nrov yog tshwm sim los ntawm kev siv ntau yam kev tsim kho tshuab xws li pawg tsav tsheb, cov khoom sib tov, thiab cov tshuab txiav rau ntawm qhov chaw tsim kho. Lub suab nrov los ntawm kev ua si hauv zej zog thiab tsev neeg lub neej kuj tseem muaj, piv txwv li, kev siv lub suab nrov ntau dhau rau kev tshaj tawm yuav ua rau muaj suab nrov nrov. Hauv kev ua neej nyob, kev siv xov tooj cua tsis raug, cov kaw lus, thiab TV kuj tuaj yeem dhau los ua lub suab nrov uas cuam tshuam rau cov neeg nyob ze hauv ntau qhov xwm txheej. Cov khoom siv hauv tsev xws li cov kiv cua hluav taws xob, lub tub yees, lub tshuab ntxhua khaub ncaws, thiab lwm yam, yog tias tsim thiab tsim khoom tsis raug lossis siv tsis raug, kuj tuaj yeem dhau los ua suab nrov.
