Raws li cov neeg siv khoom lub electret condenser microphone kev daws teeb meem, Aopuxin tau tsim ib qho kev daws teeb meem sim ib-rau-ob los txhim kho lub peev xwm sim ntawm cov neeg siv khoom cov khoom ntawm cov kab ntau lawm.
Piv rau chav uas tsis muaj suab nrov, lub tshuab kuaj no muaj qhov ntim me dua, uas daws qhov teeb meem kuaj thiab ua rau kev txuag nyiaj zoo dua. Nws kuj tseem tuaj yeem txo tus nqi ntawm kev tuav cov khoom.