AMR → AC3

Yeah, uye zvinokosha kutarisira. Mafomati maviri ari kushaya, saka encoder AC3 ari kushanda kubva kune audio iyo yaive yapfuura neimwe psychoacoustic pass, uye pfungwa dzayo dzinoumba yekutanga seti. Pa 192 kbps kana kupfuura, iyo mhinduro ichiri yakajeka kune vazhinji vanonzwa. Kana iwe uine master isina kushaya chero kupi, encoding the AC3 kubva kune iyo inodzivirira double pass zvakakwana.

Nekuti imwe nzvimbo yacho inonzi codec yechitaura kupfuura codec yechirongwa chemuvhi. Inoratidza pfungwa dzevanhu uye inobvisa zvese zviri kunze kwebandwidth yefoni, izvo zvinokosha kana uchida kutumira meseji uye zvinokuvadza kana uchida kutumira chero chinhu chine mainstruments. Kuchinjana kwacho hakugone kudzosera mafrequencies akaipa — havana kunyorwa mukodzero yekutanga. AMR inoravira ndangariro: 8 kHz bandwidth yake inoravira zvese zviri pamusoro pefoni frequencies, uye hapana mari yekudzokorora-kunyora zvinozoidzosera.

Zviri pachena kuti 192 kbps ndezvekunonoka AC3; kutevedzera kwe AC3 pasina kunonoka. Gadzira 320 kbps kana iwe uchida kunonoka zvakanyanya, 128 kbps kune podcast yekugoverwa ine huremu, kana 96 kbps kune mashoko chete ayo faira rine hunhu kupfuura studio.

Kana AMR iri nematambudziko (MP3, AAC) uye AC3 iri pasina matambudziko (WAV, FLAC), AC3 haina kunyatsoita seAMR — haugone kudzosa ruzivo rwakaiswa neAMR codec ine matambudziko. Kana AMR iri pasina matambudziko uye AC3 iri nematambudziko, fungidzira kuti AC3 encoder ichadzosera kumanikidza; pa192 kbps matambudziko haasi kuonekwa nevanhu vazhinji.

Yeah - zita, muimbi, album, gore, track number, album art, BPM, replay-gain zvinoverenga kubva ku AMR container uye zvakanyorwa muzvinyorwa zvakaenzana pa AC3 container. ID3v2 (MP3), Vorbis mashoko (OGG, FLAC), MP4 atoms (AAC, M4A), RIFF INFO (WAV), iXML chunks zvese zvinoratidzwa zvakachena. AC-3 iDolby Digital, iyo surround format yakagadzirirwa kuLaserdisc, DVD, ATSC kutumira uye cinema mukutanga kwe1990s.

Yeah — bvisa folder ye AMR mafaera uye isu tinozvigadzirisa zvakaenzana. Premium ine akawanda akaenzana maworkers uye hapana kumanikidza kwefile size, saka batch ye500-file inopera mumasekondi kupfuura maminetsi. Folder nharaunda inochengetwa muZIP output.

Zviri pachena kuti hapana (a 48 kHz AMR inogadzira 48 kHz AC3, a 44.1 kHz AMR inogadzira 44.1 kHz AC3). Kuti uwane kuvimbika kwakakodzera — semuenzaniso, kubvisa 96 kHz studio masters kusvika 44.1 kHz AC3 kune CD kurodha, kana kubvisa 22 kHz voicemail kusvika 44.1 kHz AC3 — iyo sample-rate dropdown inoshandisa SOX-style resampling ine mhando yepamusoro.

Yeah — loudness-normalize sarudzo inoshandisa ITU-R BS.1770 / EBU R128 normalization kune AC3 output, ichitarisa -14 LUFS (streaming standard) kana -16 LUFS (podcast standard) kana chiyero chakakodzera. Inokosha kana uchishandura zvinyorwa zvakasiyana-siyana nemamwe masimba kuita imwe AC3 playlist.

MP3 inotamba pasi rose pazvose zvinogadzirwa zvakagadzirwa mumakore apfuura 20. AAC inotamba paApple, Android, Sonos, uye mastereo emotokari emazuva ano. FLAC inotamba pa Sonos uye Android ezvino, asi kwete zvakanaka pa iPods ekare. WAV inotamba pazvose asi faira iri hombe. Iyo yekumisikidza-chigadzirwa dropdown inotora yakasimba AC3 codec yeiyo platform yaunotaura. AC-3 ndiyo surround track iyo yega yega AV receiver, DVD player uye TV inowana, izvo zvinoita kuti irambe iri basa rekutanga rekuburitsa. AC-3 haina kunyatsoshanda nezvinodiwa nezuva rino uye haibvumirwe nebrowser, foni kana mamwe mawebhu maplayers pasina kudzokorora ku stereo.

Yeah — uploads AMR mafaera anogadziriswa muzvirongwa zvakasiyana uye anogadziriswa mukati memasekondi. Tisingatamba, hatichengeti, kana kugovera zvemukati zvemutauro. Pipeline inofamba pahardware isu tinodzora kubva pakutanga kusvika pakupera; hapana sevhisi yechitatu inowana faira rako.

Same-codec re-mux (semuenzaniso, AAC mukati M4A -> AAC mukati MP4): 10-30 masekondi. Codec shanduko (semuenzaniso, FLAC -> MP3 kana WAV -> AAC): zvinonyanya 10-20% yenguva yekuburitsa, saka 1-hour AMR -> AC3 inosvika pa 6-12 maminitsi pa standard pipeline.