AC3 → AMR

Maida Naka AC3 zuwa AMR fayiloli da wahala

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Ana lodawa

Yadda ake canzawa AC3 zuwa AMR

Mataki na 1: Loda naka AC3 fayiloli ta amfani da maɓallin da ke sama ko ta hanyar ja da sauke su.

Mataki na 2: Danna maɓallin 'Maida' don fara hira.

Mataki na 3: Sauke fayil ɗin da aka canza AMR fayiloli

AC3 zuwa AMR Tambayoyin da ake yawan yi game da Canzawa

Ta yaya zan canza sauti daga AC3 zuwa AMR ba tare da rasa inganci ba?

Ka shigar da fayil AC3 kuma mai maida zai zaɓi AMR codec da bitrate don ya haɗu da ma'anar. AMR ba da asara (WAV / FLAC / ALAC) zai kiyaye kowace misali da bit-identical; AMR da asara (MP3 / AAC / OGG / Opus) zai ƙirƙiri zuwa 192 kbps wanda yake bayyananne ga mafi yawan kunnuwa. AC-3 shi ne audio mai yawa da asara, a kan 5.1 a 384 ko 448 kbps, tare da metadata don normalization da downmixing na magana. AMR shi ne narrowband magana codec aiki tsakanin 4.75 da 12.2 kbps, modeling da mutum vocal tract a matsayin mai cikakken audio spectrum.

Me ya faru da sauti mai yawa-kanana idan an canja AC3 zuwa AMR?

An ɗaga shi zuwa stereo, saboda AMR ba shi da wani nau'in dandamali mai yawa. An yi amfani da ƙananan haɗe-haɗe na ƙananan haɗe-haɗe don haka zauren magana na tsakiyar dandamali yana da kyau kuma an haɗa wuraren da ke kusa a matakin da aka rage. Duk abin da ya dogara kan wurin dandamali na daban ya tafi idan wannan ya faru. AMR na halaka kiɗa: bandwidth ɗinsa na 8 kHz yana cire duk abin da ke sama da frequencies na waya, kuma babu adadin sake-encoding yana dawo da shi.

Me ya sa kiɗa take da zafi a cikin wannan canji?

@ info: shell AC-3 ne ba daidai ba da zamani standards kuma ba a yarda da browsers, wayar hannu ko mafi yawan web players ba tare da wani downmix zuwa stereo.

Mene ne bitrate ɗin da fayil ɗin da ya samo AMR zai yi amfani da shi?

Diflomasiyya ita ce 192 kbps ga AMR mai rasa; wucewa-ta-tare ga AMR mara rasa. Ka sake zuwa 320 kbps ga audiophile ko 96 kbps ga magana / podcast. Zaɓin yana musanya girman fayil da amincin ji; ƙasa da 96 kbps artifacts masu rasa suna zama masu gani a cikin kiɗa.

Shin tafiya daga AC3 zuwa AMR za ta rage ingancin sautina?

Idan AC3 yana da asara kuma AMR ba da asara ba ne (misal. MP3 → WAV), AMR bai fi kyau ba fiye da AC3 — ba za ka iya dawo da bayanai da aka manta ba. Idan AC3 yana da asara kuma AMR ba da asara ba ne, codec ɗin AMR zai sake ƙunsar; a 192 kbps sakamakon zai zama bayyananne ga mafi yawan abun ciki.

Shin mai canza AC3 zuwa AMR yana riƙe da ID3 / metadata tag?

Na'am — suna, mai waƙa, alƙawari, shekara, lamba na waƙa, da zane na alƙawari ana karanta su daga cikin ƙofar AC3 kuma ana rubuta su cikin ƙofar AMR inda siffar take goyon bayan alamomin. Dukkan matsaloli masu yawa (MP3, AAC, FLAC, OGG) suna kula da alamomin da kyau; WAV ba haka ba. AMR shi ne Adaptive Multi-Rate, magana codec 3GPP standardized ga GSM kira da wayar hannu sauti recorders.

Shin zan iya canja ɗaruruwan fayiloli AC3 zuwa AMR?

Na'am — ka saka wata ƙuƙwalwar fayiloli AC3 cikin kuma mu yi aiki da su a cikin haɗin kai. Premium na da ma'aikata da yawa a cikin haɗin kai kuma ba shi da iyaka ga girman fayil, don haka ƙungiya mai fayiloli 500 na iya ƙarewa cikin minti ba tare da minti da yawa ba.

Shin AMR zai riƙe daidaitaccen adadin misali kamar AC3?

A bisa diff, na'am — 48 kHz AC3 zai zauna 48 kHz a cikin AMR. Idan kana buƙatar ka rage misalin don daidaituwa (96 kHz → 44.1 kHz don ƙona CD), zaɓin adadin misali zai yi amfani da sake misalin da inganci mai girma a cikin mataki na ƙoɗa ɗaya.

Shin zan iya daidaita ƙarfin sauti idan na canja AC3 zuwa AMR?

Yes — the loudness-normalize option applies ITU-R BS.1770 / EBU R128 normalization to the AMR, targeting -14 LUFS (streaming standard) or -16 LUFS (podcast standard). Useful when batching tracks mastered at varying levels.

Shin AMR na zai iya wasa a kan stereo na motar, iPod, da Sonos?

MP3 na wasa a duk inda. AAC na wasa a kan Apple, mafi yawan Android, da Sonos. FLAC na wasa a kan Sonos da Android amma ba a kan iPods na daɗaɗɗa ba. WAV na wasa a kan duk abin da yake amma yana da girma. Wurin rufewa na ƙananan-fayil-na-saita-farawa na zaɓa AMR codec wanda aka inganta ga kayan aikinka na manufa. AMR na sauke sauti mai ƙarancin girma - sa'a ɗaya na magana yana da girman megabytes - kuma shi ne abin da wasu wayoyin salula ke amfani da shi wajen sauke kiran.

Shin fayil ɗin AC3 na sirri ne yayin canjawa zuwa AMR?

Na'am — an yi aiki da fayilolin AC3 da aka tura a cikin masu aiki masu tsalle-tsalle kuma an share su cikin mintina. Ba za mu taba wasa, adana na dogon lokaci, ko raba abun cikin sauti ba. Tagan adana gaba ɗaya yana cikin /privacy/.

Menene lokacin da ake buƙata don canja AC3 na awa 1 zuwa AMR?

Re-mux na codec-daidai: daga sakan 10 zuwa 30. Sake-saukar da alamun shafi zuwa wani codec daban: a kan 10 zuwa 20% na lokacin da ake amfani da shi, don haka wata sa'a AC3 → AMR ta ƙare cikin minti 6 zuwa 12. Ayyuka na batch suna yin aiki a kan ma'aikata daban-daban don kara sauri.

AC3

AC3 (Audio Codec 3) tsari ne na matsawa mai jiwuwa da aka saba amfani dashi a cikin waƙoƙin sauti na DVD da Blu-ray.

AMR

AMR (Adaptive Multi-Rate) wani tsari ne na matsawa mai jiwuwa wanda aka inganta don lambar magana. An fi amfani da shi a cikin wayoyin hannu don rikodin murya da sake kunna sauti.