AMR → M4A

Chinja Yako AMR kuti M4A mafaira pasina simba

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Kuisa

Maitiro ekushandura AMR kuti M4A

Danho 1: Isa yako AMR mafaira uchishandisa bhatani riri pamusoro kana nekudhonza nekudonhedza.

Danho rechipiri: Dzvanya bhatani rekuti 'Convert' kuti utange kushandura.

Danho rechitatu: Dhawunirodha yako yakashandurwa M4A mafaira

AMR kuti M4A Mibvunzo Inowanzo bvunzwa Nezvekuchinja

Ndinogona sei kushandura AMR audio kuenda ku M4A pasina kupora kwemhando?

Upload the AMR file and the converter chooses the M4A codec and bitrate to match the source. Lossless M4A (WAV / FLAC / ALAC) preserves every sample bit-identical; lossy M4A (MP3 / AAC / OGG / Opus) defaults to 192 kbps which is transparent for most ears. AMR i narrowband speech codec ichiita pakati pe4.75 ne12.2 kbps, ichifananidza nevanhu vanotaura, kwete nezvose zvinotaurwa nevanhu. An M4A iine AAC mumamiriro ezvinhu akawanda, kana Apple Lossless (ALAC) apo yakaita kubva ku lossless kurova.

Kushandura AMR kuenda ku M4A ndeimwe yekupedzisira rondedzero yekumanikidza kwekumanikidza?

Yeah, uye zvinokosha kutarisira. Mafomati maviri ari kushaya, saka encoder M4A ari kushanda kubva kune audio iyo yaive yapfuura ne 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 M4A kubva pane inodzivirira double pass zvakakwana.

Ndinogona here kuisa zita remutambi kana realbum paM4A?

Ndinoda, uye ndeimwe yechokwadi kubudirira kupfuura AMR, iyo haina kuchengeta chero chinhu. M4A inotakura zita, muimbi, album, gore, nhamba yemugwagwa uye inopinda mufananidzo wechidzitiro mubhokisi, saka library yemuvhimi inoisa zvakakwana pasina manual pass. M4A inoita kuti metadata, mabhuku, uye maartist arambe aripo, uye ndiyo audio format inoshandiswa neApple.

Nei mutauro wemutauro unonzwa sewevakadzi munguva iyi?

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.

Ndeipi bitrate iyo iyo M4A faira ichashandisa?

Zviri pachena kuti 192 kbps ndezvekunonoka M4A; kutevedzera kwe M4A. Dzvanya pa 320 kbps kana uchida vhidhiyo kana 96 kbps kana uchida mashoko/ podcast. Kusarudza kuri kuchinja saizi yefaira neyekutaura; pasi pe 96 kbps, kunonoka kunoonekwa mumimhanzi.

Kubva pa AMR kuenda pa M4A kunoderedza sei kunaka kwezwi rangu?

Kana AMR iri nematambudziko uye M4A iri pasina matambudziko (e.g. MP3 → WAV), M4A haina kuipa kupfuura AMR — haugone kudzosa ruzivo rwakaiswa pasi. Kana AMR iri nematambudziko uye M4A iri nematambudziko, M4A codec inodzosera kumanikidza; pa192 kbps, iyo mhinduro inoratidza zvirimo zvakawanda.

I AMR to M4A converter inochengeta ID3 / metadata tags?

Yeah — zita, muimbi, album, gore, nhamba yechikwata, uye nhamba yealbum art inoverenga kubva ku AMR container uye inonyora mu M4A container apo fomati inotsigira ma tag. All common targets (MP3, AAC, FLAC, OGG) handle tags fine; raw WAV does not. M4A ndiyo MP4 yekuchengetera iine mashoko chete, uye ndiyo iTunes, Apple Music uye iPhone Voice Memos app inogadzira.

Ndinogona kushandura mazana e AMR mafaera kuita M4A?

Yeah - bvisa folder ye AMR mafaera uye isu tinozvigadzirisa zvakaenzana. Premium ine akawanda akaenzana maworkers uye hapana kumanikidza kwefaera, saka batch ye500-file inosvika mumasekondi kupfuura makumi emasekondi.

I M4A ichachengeta iyo imwechete sampling rate se AMR?

Zviri pachena kuti hapana — 48 kHz AMR inoramba 48 kHz mu M4A. Kana iwe uchida kushambadza pasi kuti zvive zvakaenzana (96 kHz → 44.1 kHz kune CD kurodha), sarudzo ye sampling-rate inoshandisa kushambadzazve kwemhando yepamusoro mune imwe encoding pass.

Ndinogona here kushandura AMR kuenda kuM4A?

Yeah — loudness-normalize sarudzo inoshandisa ITU-R BS.1770 / EBU R128 normalization kune M4A, ichitarisa -14 LUFS (streaming standard) kana -16 LUFS (podcast standard). Inokosha kana uchiisa mabhaisikopo akaomarara pamhando dzakasiyana dzemabasa.

Ndinogona here kutamba M4A yangu pafoni yemotokari, iPod, uye Sonos?

MP3 inotamba chero kupi. AAC inotamba paApple, mamwe maAndroid, uye Sonos. FLAC inotamba pa Sonos uye Android asi kwete pa iPods ekare. WAV inotamba pazvose asi iri hombe. Iyo yakakwira-yakajairwa-yakajairwa dropdown inotora M4A codec yakagadzirirwa yako yekumisikidza hardware. M4A anochengeta maviri zvakasiyana zvinhu pamberi imwe kusvikira — lossy AAC uye lossless ALAC — uye kwete-Apple hardware rutsigiro hachisi chakafanana.

Ndiani anochengeta AMR faira rangu kana ndichishandura kuita M4A?

Yeah — yakakwira AMR mafaera anogadziriswa muzvirongwa zvakasiyana uye anogadziriswa mukati memasekondi. Hatina kutamba, kuchengeta kwenguva yakareba, kana kugovera zvemukati zvemutauro. Iyo yese yekuchengetwa window iri mu /privacy/.

AMR

AMR (Adaptive Multi-Rate) iodhiyo yekumanikidza fomati yakagadziridzwa yekutaura kodhi. Inowanzoshandiswa mumafoni ekurekodha inzwi uye kutamba zvakare.

M4A

M4A iodhiyo faira fomati ine hukama neMP4. Iyo inopa yepamusoro-mhando yekutsikirira nerutsigiro rwemetadata, ichiita kuti ive yakakodzera kune akasiyana maapplication.