Vazhinji uye vashandisi vazhinji vatanga kushandisa dhijitari chiratidzorunhare, asi mune dzimwe nzvimbo dzisina kubudirira analoginen nharembozha ichiri kushandiswa. Vazhinji vashandisi vanovhiringidza masaini eanalog nemasaini edhijitari. Saka chii chinonzi analog foni? Chii chinonzi digital signal foni?
Runhare rweAnalog - Runhare runotumira ruzha kuburikidza nemasaini eanalogi. Yemagetsi analog siginecha inonyanya kureva amplitude uye inoenderana inoenderera yemagetsi chiratidzo, ichi chiratidzo chinogona kuve analogi redunhu kune akasiyana mashandiro, kuwedzera, kuwedzera, kuwanda uye zvichingodaro. Analogi masaini aripo kwese kwese mune zvakasikwa, senge tembiricha yemazuva ese shanduko.
Chiratidzo chedhijitari inomiririra yedhijitari yechiratidzo chenguva (inomiririrwa nekutevedzana kwe1 uye 0), kazhinji inowanikwa kubva kune analogi chiratidzo.
Zvakanakira uye zvakaipira zvemasaini edhijitari:
1, tora yakakura frequency bhendi. Nekuti mutsara unofambisa chiratidzo chekupuruzira, kutapurirana kwedhijitariruzivo rwezwiinoda kuverengera 20K-64kHz bandwidth, uye nzira yeanalogi yezwi inongotora 4kHz bandwidth, kureva kuti, PCM siginecha maakaundi kune akati wandei analogi izwi nzira. Kune imwe chiteshi, chiyero chekushandiswa kwayo chinodzikiswa, kana zvinodiwa pamutsara zvinowedzerwa.
2, izvo zvinodiwa zvehunyanzvi zvakaomarara, kunyanya tekinoroji yekubatanidza inoda kurongeka kwakanyanya. Kuti unzwisise nenzira kwayo zvinorehwa neanotumira, anogamuchira anofanira kusiyanisa nemazvo chinhu chimwe nechimwe chekodhi, uye nekutsvaga kutanga kweboka rega rega reruzivo, izvo zvinoda kuti mutumiri uye anogamuchira anyatsoona kuwiriranisa, kana kuumbwa kwedhijitari network, dambudziko rekuwiriranisa richaita. kunyanya kuoma kugadzirisa.
3, iyo analog / dijitari shanduko ichaunza quantization kukanganisa. Nekushandiswa kwemasekete makuru akabatanidzwa uye kufarirwa kwebroadband transmission media senge optical fiber, masaini akawanda edhijitari anoshandiswa kuchengetedza ruzivo uye kutapurirana, saka masaini eanalogi anofanira kushandurwa kuita analog/digital, uye quantization zvikanganiso zvichange zvisingadzivisiki. kuitika mukutendeuka.
Nguva yekutumira: Feb-05-2024
