AMR → FLAC

Maida Naka AMR zuwa FLAC fayiloli da wahala

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Ana lodawa

Yadda ake canzawa AMR zuwa FLAC

Mataki na 1: Loda naka AMR 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 FLAC fayiloli

AMR zuwa FLAC Tambayoyin da ake yawan yi game da Canzawa

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

Ka shigar da fayil AMR kuma mai maida zai zaɓi FLAC haɗin codec / bitrate wanda ya dace da siffar asali. FLAC mai rasawa (WAV / FLAC / ALAC) zai kiyaye kowace misali daidai; FLAC mai rasawa (MP3 / AAC / OGG / Opus) yana da diff zuwa 192 kbps wanda yake bayyananne ga kusan dukkan abun cikin kiɗa. 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. FLAC na amfani da linear prediction da kuma Rice coding domin isa kusan 50-60% na girman farko yayin da ake decoding baya zuwa bit-identical PCM.

Shin FLAC zai yi wasa a cikin motar ta ko a kan kayan aiki na daɗaɗɗe?

A mafi yawan lokuta ba haka ba. AMR ana decode da duk wani abu, ciki har da ƴankunan kafa na mota da masu wasa da suka fi daɗewa; FLAC yana buƙatar kayan aikin da ke sani da codec, wanda kayan aikin da ke da kansu ba su da shi. Idan maɓallin shine na mota ko mai wasa da aka iya ɗaukar shi, wannan yana da matukar hujjar zama a kan AMR. FLAC ne har yanzu sau da yawa mafi girma fiye da wani mai kyau lossy fayil, kuma Apple na ecosystem kawai ƙara goyon baya a baya da kuma da ƙyama.

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

@ info: shell 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.

Mene ne bitrate na ƙarshen fayil FLAC?

Dimba 192 kbps ga FLAC mai rasa; wucewa ga FLAC mara rasa. Ka sake zuwa 320 kbps idan kana so ka sami mafi girman gaskiyar da aka rasa, 128 kbps ga rabawa da aka hana girman podcast, ko 96 kbps ga ma'ana-da-ji kawai inda fayil ɗin da ke da ƙarancin girman yana da muhimmanci fiye da bayani na studio.

Shin tafiya daga AMR zuwa FLAC za ta rage ingancin sauti na?

Idan AMR yana da asara (MP3, AAC) kuma FLAC yana da rashin asara (WAV, FLAC), FLAC bai fi kyau ba fiye da AMR — ba za ka iya dawo da bayanai da aka manta da su ba daga codec ɗin da ke da asara AMR. Idan AMR yana da rashin asara kuma FLAC yana da rashin asara, ka yi tsammanin mai encoder FLAC zai sake ƙunsar; a 192 kbps asarar ba za a iya gane ta ba ga mafi yawan kunnuwa.

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

Na'am — suna, mai waƙa, alƙawari, shekara, lambar waƙa, zane na alƙawari, BPM, sake kunnawa-gaino an karanta su daga cikin ƙofar AMR kuma an rubuta su cikin filayen da suka dace a cikin ƙofar FLAC. ID3v2 (MP3), Vorbis comments (OGG, FLAC), MP4 atoms (AAC, M4A), RIFF INFO (WAV), iXML chunks duk suna da kyau. FLAC shi ne Free Lossless Audio Codec, wani format mai buɗewa daga 2001 wanda ke ƙunsar ba tare da ya manta da wani misali guda ba.

Shin zan iya canja ɗaruruwan fayiloli AMR zuwa FLAC?

Na'am — ka saka wata ƙuƙwalwar fayiloli AMR cikin kuma mu yi aiki da su a cikin daidaito. Premium na da ma'aikata masu yawa a cikin daidaito kuma babu iyaka ga girman fayil, don haka ƙungiya mai fayiloli 500 na iya kammalawa cikin minti ba tare da minti goma ba. An kiyaye tsari na ƙuƙwalwar fayil a cikin fitarwa ZIP.

Shin FLAC zai riƙe daidaitaccen adadin misali kamar AMR?

Da ƙayyadadden, na'am (48 kHz AMR na samar da 48 kHz FLAC, 44.1 kHz AMR na samar da 44.1 kHz FLAC). Domin daidaituwa mai dacewa — misali, rage nauyin nauyin 96 kHz na masu shirya studio zuwa 44.1 kHz FLAC don ƙona CD, ko kuma rage nauyin nauyin 22 kHz na sakonnin murya zuwa 44.1 kHz FLAC — sashin saukar da nauyin nauyin na'ura na amfani da nauyin sake sake nauyin nauyin SOX mai inganci.

Shin zan iya daidaita ƙarfin sauti cikin mataki AMR zuwa FLAC?

Yes — the loudness-normalize option applies ITU-R BS.1770 / EBU R128 normalization to the FLAC output, targeting -14 LUFS (streaming standard) or -16 LUFS (podcast standard) or a custom value. Useful when batch-converting tracks with varying mastering levels into a single FLAC playlist.

Shin FLAC zai yi wasa a kan mai maganar motata / iPod / Sonos / Bluetooth?

MP3 na wasa a duk wani na'ura da aka yi a cikin shekaru 20 da suka gabata. AAC na wasa a kan Apple, mafi yawan Android, Sonos, da na'urorin stereo na mota na yau da kullum. FLAC na wasa a kan Sonos da na'urorin Android na yanzu, amma ba da kyau a kan iPods na daɗaɗɗa. WAV na wasa a kan duk wani abu amma fayil ɗin yana da girma. Maɓallin rufe na'urar-ciki na zaɓa wani FLAC codec mai aminci ga dandamalin da ka ƙayyade. FLAC na ba ka gaskiyar WAV a rabin girman, tare da takamaiman metadata tags da kuma zane-zane na ciki, wanda shi ne dalilin da ya sa yake da ikon labaratori na kiɗa ba tare da asara ba.

Shin fayil ɗin AMR na sirri ne yayin canjawa?

Na'am — an yi aiki da fayilolin AMR da aka tura a cikin masu aiki daban-daban kuma an share su cikin minti. Ba za mu taba wasa, adana, ko raba abun cikin sauti ba. Wurin da ake kaiwa yana tafiya akan kayan aiki da muke kula da su daga ƙarshe zuwa ƙarshe; babu wata sabis na ɓangare na uku da ke karɓar fayil ɗinka.

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

Re-mux na codec-daidai (misal. AAC cikin M4A -> AAC cikin MP4): sakan 10-30. Canja codec (misal. FLAC -> MP3 ko WAV -> AAC): a kan 10-20% na lokacin da ake da shi, don haka wata sa'a AMR -> FLAC ta ƙare cikin minti 6-12 a kan hanyar ruwa ta ƙa'ida.

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.