ULaw codec yog dab tsi?
ULaw codec yog dab tsi?

Video: ULaw codec yog dab tsi?

Video: ULaw codec yog dab tsi?
Video: VoIP Fundamentals - Codecs 2024, Kaum ib hlis
Anonim

Lwm yam qauv: G.711.0, G.711.1

Ib yam li ntawd, Alaw codec yog dab tsi?

Qhia G711 aLaw G. 711 yog ITU-T tus qauv algorithm rau kev sib txuas suab uas yog siv rau kev sib txuas lus digital thiab txhawb nqa los ntawm feem ntau ntawm cov chaw muab kev pabcuam VoIP. g.711 ib codec muab lub suab zoo tshaj plaws rau VoIP.

Dab tsi yog qhov txawv ntawm g711 thiab g729? Qhov txawv codecs muab txawv qib ntawm compression. g711 ua muab lub suab tsis zoo siab, tab sis siv ntau bandwidth. g729 ua yog compressed kom nws siv tsawg bandwidth ntawm tus nqi ntawm qee lub suab zoo, txawm hais tias nws tseem ntau dua qhov zoo txaus rau feem ntau hu.

Tom qab ntawd, lo lus nug yog, ULAW thiab Alaw yog dab tsi?

A-law vs u-law Thawj qhov sib txawv ntawm ob yog qhov dynamic ntau ntawm ouput; U-law muaj qhov loj dynamic ntau dua a-law . Dynamic ntau yam yog qhov sib piv ntawm lub suab ntsiag to thiab nrov tshaj plaws uas tuaj yeem sawv cev hauv lub teeb liab.

Qhov txawv ntawm g711a thiab g711u yog dab tsi?

g711 ua yog lawm thiab g711 ua yog ulw. Yeej, qhov koj siv nyob ntawm qhov twg hauv ntiaj teb koj yog. Hauv tebchaws Australia (thiab feem ntau ntawm lub ntiaj teb sab nraud Asmeskas) peb siv alaw. Yog li, hu ua nrog g711 ua tuaj yeem hloov tau yooj yim dua rau hauv TDM lub suab hu thaum nws tsoo PSTN.

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