AMR → AC3

Guqula Eyakho AMR kuya AC3 amafayela kalula

Khetha amafayela akho

noma cindezela bese ususa amafayela akho lapha

I-Free Plan: 1 Ukushintsha/ihora · Iya ngaphandle komkhawulo →

Tshintsha amafayela mahhala, Pro abasebenzisi bangaguqula amafayela amakhulu kakhulu; Bhala manje

Ukulayisha

Indlela yokuguqula AMR kuya AC3

Isinyathelo 1: Layisha eyakho AMR amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho AC3 amafayela

AMR kuya AC3 Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiyiguqula kanjani i-AMR yomsindo ibe yi-AC3 ngaphandle kokulahlekelwa ukhwalithi?

Layisha phezulu ihele AMR futhi umguquli ukhetha i AC3 codec ne-bitrate ukufana nomsuka. Ukungabi nalutho AC3 (WAV / FLAC / ALAC) ugcina yonke isampula nge-bit-identical; ukungabi nalutho AC3 (MP3 / AAC / OGG / Opus) iphutha ku-192 kbps ecacile kulezi zindlebe eziningi. I-AMR iyi-narrowband speech codec esebenza phakathi kuka-4.75 no-12.2 kbps, emodela i-human vocal tract ngaphezu kwe-audio spectrum ephelele. AC-3 yisandi esiningi esingenalutho, sivame u-5.1 ku-384 noma 448 kbps, nedatha yemeta yokuxoxa nokuhlanganiswa ngezansi.

Ingabe ukushintsha AMR kuya ku AC3 kuyingxenye yesithathu yokucindezela okulahlekile?

Yebo, futhi kufanelekile ukuhlela. Izifomethi zombili ziyi-lossy, ngakho-ke i-AC3 encoder isebenza kusuka kumsindo osele udlulele engxenyeni eyodwa ye-psychoacoustic, futhi iziphakamiso zayo zihlanganisa isiqephu sokuqala. Ku-192 kbps noma ngaphezulu, imiphumela ihlala icacile kakhulu. Uma une-lossless master nganoma yikuphi, ukukopisha i-AC3 kusuka kulo kunciphisa ukudluliswa okuphindiwe ngokuphelele.

Kungani umculo uzwakala ubuhlungu kulo mguquko?

Ngenxa yokuthi ingxenye eyodwa iyi-codec yokuxoxa hhayi i-codec yomculo. Imodelisa i-human vocal tract futhi isusa konke okungaphandle kwe-bandwidth yefoni, okulungile ku-voice memo futhi kulahlekile kunoma yini enezithuluzi ngaphakathi. Ukushintshana eduze kwayo akukwazi ukubuyisela izifremu ezilahlekile — azikhombisile endaweni yokuqala. I-AMR ibulala umculo: i-8 kHz bandwidth yayo isusa konke okuphezulu kwe-frequency yefoni, futhi akukho inani lokuphindeka kokucofa liyibuyisela emuva.

Yini i-bitrate ezoba yihele elitholakele AC3 lisebenzisa?

Iphutha lingu-192 kbps ku-lossy AC3; dlula-nge-lossless AC3. Yisuse ku-320 kbps ku-audiophile noma ku-96 kbps ku-voice / podcast. Ukhetho lushintsha ubukhulu behele ku-audible fidelity; ngaphansi kwe-96 kbps i-lossy artifacts ibonakale kumculo.

Ingabe ukudlula kusuka ku AMR kuya ku AC3 kuzonciphisa ukhwalithi yomsindo wami?

Uma AMR ilahlekelwa yinto futhi AC3 ayilahlekelwanga (isibonelo MP3 → WAV), AC3 ayingcono kuna AMR — awukwazi ukubuyisela imininingwane elahlekile. Uma AMR ilahlekelwa yinto futhi AC3 ayilahlekelwanga, AC3 i-codec icindezela kabusha; ku-192 kbps imiphumela icacile kuningi kwezithameli.

Ingabe i-AMR kuya ku-AC3 iguqula igcina ID3 / metadata tags?

Yebo — isisihloko, umculi, i-album, unyaka, inani le-track, kanye ne-album art zifundwa kusuka ku AMR ibhokisi futhi zibhalwe ku AC3 ibhokisi lapho ifomu lixhasa iziphawuli. Zonke izinhloso ezijwayelekile (MP3, AAC, FLAC, OGG) ziphatha iziphawuli kahle; i-WAV emnyama ayisebenzi. AC-3 yiDolby Digital, ifomu elijikelezayo elijwayelekile le-laserdisc, DVD, ATSC broadcast ne-cinema ekuqaleni kuka-1990.

Ingabe ngingakwazi ukushintsha amahele amakhulu AMR ku AC3?

Yebo - khipha isibaya se AMR amafayela ngaphakathi futhi sizoziphatha ngokuhambisana. I-Premium inemisebenzi eminingi ehambisanayo futhi akukho lutho oluphezulu lwesayizi yefayela ngalinye, ngakho-ke i-500-file batch iqedela imizuzu endaweni yamahora angama-10.

Ingabe i-AC3 izogcina isilinganiso esifanayo sesampula njenge-AMR?

Ngokungajwayelekile yebo — 48 kHz AMR ihlala 48 kHz ku AC3. Uma ufuna ukusatshalaliswa ngezansi ukuze kusebenze (96 kHz → 44.1 kHz ukuthwebula i-CD), isampula-rate option ifaka ukusatshalaliswa okusezingeni eliphezulu kulowo mkhawulo wokucofoza.

Ingabe ngikwazi ukushintsha umsindo uma ngiguqula AMR kuya ku AC3?

Yebo — i-loudness-normalize option ifaka i-ITU-R BS.1770 / EBU R128 normalization ku-AC3, idinga -14 LUFS (isilinganiso sokusakaza) noma -16 LUFS (isilinganiso sepodcast). Kuhle uma uhlela ama-tracks amastered kuma-levels ahlukene.

Ingabe AC3 yami izodlala ku-car stereo, iPod, ne-Sonos?

MP3 idlala kuwo wonke amathuluzi. AAC idlala ku-Apple, ku-Android, ne-Sonos. FLAC idlala ku-Sonos ne-Android kodwa hhayi ku-iPods ezidala. WAV idlala kuwo wonke amathuluzi kodwa ikhulu. Idivayisi ethuthukisiwe-isethelwe ngaphambili ikhetha i-AC3 codec elungele i-hardware yakho efanele. AC-3 yi-surround track ngayinye ye-AV receiver, DVD player ne-TV decodes ngokusemthethweni, ngakho-ke ihlala iyi-baseline yokusabalalisa. AC-3 ayisebenzi kahle ngokujwayelekile okusha futhi ayivunyelwe yiziphequluli, amafoni noma abadlali abaningi be-web ngaphandle kokuxhuma phezulu kwe-stereo.

Ingabe ihele lami AMR liyimfihlo ngesikhathi sokuguqulwa ku AC3?

Yebo — amafayela alayishwe phezulu AMR aphathwa emisebenzini ehlukanisiwe futhi asuswa ngaphakathi kwemizuzu. Asikwazi ukudlala emuva, ukugcina isikhathi eside, noma ukuhlanganisa okuqukethwe kwesandi. Ifasitela lokugcinwa okuphelele likhona ku /privacy/.

Ingabe kuthatha isikhathi esingakanani ukushintsha ihora le-1 AMR kuya ku-AC3?

I-codec efanayo iphinde i-mux: 10 kuya ku-30 imizuzwana. Yenza kabusha i-codec ehlukile: 10 kuya ku-20% yosuku lokusuka, ngakho-ke ihora AMR → AC3 liphele ngo-6 kuya ku-12 imizuzwana. Imisebenzi yeqembu i paralelize phakathi kwabasebenzayo ukuze kuqhubeke ukukhawulelwa.