Uvakalelo lwe-microphone yimpendulo yombane yemveliso yayo kwigalelo eliqhelekileyo le-acoustic.Isalathisi esiqhelekileyo sokufaka isalathisi esisetyenziselwa imilinganiselo ye-microphone sensitivity yinqanaba le-94dB loxinzelelo lwesandi (SPL) okanye i-1 kHz sine wave kwi-1 Pa (Pa, umlinganiselo woxinzelelo).Ngegalelo elisisigxina le-acoustic, aimayikrofoningexabiso eliphezulu lovakalelo linomgangatho ophezulu wemveliso kune-microphone enexabiso eliphantsi lovakalelo.Uvakalelo lwemakrofoni (olubonakaliswe kwi-dB) ludla ngokuba lubi, ngoko ke uvakalelo luphezulu, kokukhona lincinci ixabiso layo elipheleleyo.
Kubalulekile ukuqaphela iiyunithi apho uvakalelo lwe-microphone lubonakaliswe.Ukuba uvakalelo lwee-microphone ezimbini azichazwanga kwiyunithi enye, uthelekiso oluthe ngqo lwamaxabiso ovakalelo alufanelekanga.Uvakalelo lwe-analog microphone ludla ngokuchazwa kwi-dBV, inani le-dB ngokumalunga ne-1.0 V rms.Uvakalelo lwe-microphone yedijithali ludla ngokuchazwa kwi-dBFS, inani le-dB xa lithelekiswa nemveliso yedijithali epheleleyo (FS).Kwimibhobho yedijithali, isiginali yenqanaba elipheleleyo lelona nqanaba liphezulu lophawu lombhobho onokulikhupha;kwi-Analog Devices MEMS microphone, eli nqanaba liyi-120 dBSPL.Jonga icandelo loNgeniso lweAcoustic oluPhezulu ukuze ufumane inkcazelo epheleleyo yalo mgangatho wophawu.
Uvakalelo lubhekisa kumlinganiselo woxinzelelo lwegalelo kwimveliso yombane (i-voltage okanye idijithali).Kwimibhobho ye-analog, ubuntununtunu budla ngokulinganiswa kwi-mV/Pa, kwaye isiphumo sinokuguqulelwa kwixabiso le-dB ngoku:
Uvakalelo oluphezulu alusoloko luthetha ukusebenza ngcono kwemakrofoni.Ukuphakama kovakalelo lwe-microphone, i-margin encinci idla ngokuba nayo phakathi kwenqanaba lemveliso kunye nenqanaba eliphezulu lemveliso phantsi kweemeko eziqhelekileyo (ezifana nokuthetha, njl.).Kwindawo ekufutshane (intetho esondeleyo) izicelo, ii-microphone ezinovakalelo kakhulu zinokuthi zithande ukugqwetheka, ezihlala zinciphisa uluhlu oluguquguqukayo lwe-microphone.
Ixesha lokuposa: Aug-04-2022
