Chinja M4A kuti AMR

Chinja Yako M4A kuti AMR mafaira pasina simba

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Kuisa

Maitiro ekushandura M4A kuti AMR

Danho 1: Isa yako M4A mafaira uchishandisa bhatani riri pamusoro kana nekudhonza nekudonhedza.

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

Danho rechitatu: Dhawunirodha yako yakashandurwa AMR mafaira

M4A kuti AMR Mibvunzo Inowanzo bvunzwa Nezvekuchinja

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

Upload the M4A file and our converter chooses the AMR codec / bitrate combination that matches the source. Lossless target (AMR = WAV / FLAC / ALAC) preserves every sample; lossy target (AMR = MP3 / AAC / OGG) defaults to 192 kbps which is transparent for spoken-word audiobooks and most music.

Kushandura M4A kuenda ku AMR ndeimwe yekupedzisira rondedzero yekumanikidza kwekumanikidza?

Yeah, uye zvinokosha kutarisira. Mafomati maviri ari kushaya, saka encoder AMR 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 AMR kubva kune iyo inodzivirira double pass zvakakwana. An M4A iine AAC mumamiriro ezvinhu akawanda, kana Apple Lossless (ALAC) apo yakaita kubva ku lossless kurova. AMR i narrowband speech codec ichiita pakati pe4.75 ne12.2 kbps, ichifananidza munhu wechivanhu nechivanhu, asi kwete nezvose zvinotaurwa nezvokutaura.

Ndezvipi zvinyorwa zvemabhaisikopo uye zvinyorwa zvealbumi zvinoramba zvichishanda mushure mekushandurwa kubva ku M4A kuenda ku AMR?

Hachisi chakachengeteka. M4A chinotakura chimiro che metadata, asi AMR hachina nzvimbo yakajairika yemutambi, album, nhamba yemufananidzo kana chipo chekuratidzira, saka mazita anotorwa kwete kuparadzwa. Tenga M4A sekopi yakanyorwa, kana wozoitazve kunyorwa nekushandisa se Mp3tag kana MusicBrainz Picard. AMR inoravira ndangariro: 8 kHz bandwidth yake inoravira zvese zviri pamusoro pefoni frequencies, uye hapana mari yekudzokorora-kunyora zvinozoidzosera.

Chii chinoitika kune multichannel audio kana uchishandura M4A kuenda ku AMR?

Ichi chinovharwa pasi kusvika kustereo, nekuti AMR haina multichannel mode. Kuparadzanisa kunoshandisa zviyero zvakajairika kuti chigaro-chigaro chinotaura chigare chakajeka uye zvinonhuwira zvinoparadzanisa pazera rakaderera. Chii zvachose chinodarika kuparadzanisa chigaro chinoiswa chiri kubuda kana ichiitika.

Nei vamwe ve M4A mafaera angu vasingashanduri?

DRM. Chimwe chikamu che M4A mafaera anovharwa nekutengesa kana software yakaburitsa iwo, uye akavharwa maaudio haagone kugadziriswa neimwe converter. Chii zvaunogona kubvisa iwe pachako, kurodha pasi, kana kutenga pasina dziviriro inoshandura zvakajairika; chibvumirano chekutenga hachizove. M4A anochengeta maviri zvakasiyana zvinhu pamberi imwe kusvikira — lossy AAC uye lossless ALAC — uye kwete-Apple hardware rutsigiro hachisi chakafanana.

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.

Ndeipi bitrate iyo faira AMR inoshandisa?

Zviri pachena kuti 192 kbps ndezvekunonoka AMR; kutevedzera kwe AMR pasina kunonoka. Dzokera ku 320 kbps kune vanofarira mashoko kana 64-96 kbps kune mabhuku ekutaura (anoonekwa nemunhu anotaura, anowedzera saizi yefayela nehafu).

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

Kana M4A iri nehuwandu hwehuwandu uye AMR iri pasina huwandu hwehuwandu (e.g. MP3 → WAV), faira AMR harisi rakanaka kupfuura M4A — haugone kudzosa ruzivo rwakaiswa pasi. Kana M4A iri pasina hwando uye AMR iri nehuwandu hwehuwandu, fungidzira kuti codec AMR ichadzosera kumanikidza; pa192 kbps izvi zvinoratidzika kune zvimwe zvinhu.

I M4A to AMR converter inochengeta ID3 / metadata tags?

Yeah - zita, munyori, album, gore, nhamba yemufananidzo, nhamba yealbum, uye chikamu chezvinyorwa (zviri zvakakosha kune audiobooks) zvinoverenga kubva ku M4A uye zvakanyorwa muAMR chigaro apo AMR fomati inotsigira ma tags.

Ndinogona kushandura mazana e M4A mafaera kuita AMR?

Yeah - bvisa folder ye M4A mafaera uye isu tinozvigadzirisa zvakaenzana. Premium ine akawanda akaenzana maworkers uye hapana kumanikidza kwefaera, saka batch ye500-file inosvika mumasekondi kupfuura makumi emasekondi.

I AMR ichachengeta iyo imwechete sampling rate se M4A?

Zviri pachena kuti hapana (48 kHz M4A → 48 kHz AMR). Kana iwe uchida kushambadza pasi kuti zvive zvakaenzana (e. g. 96 kHz → 44.1 kHz for CD burning) iyo yakakwira sampling-rate sarudzo ichaita izvi nemhando yepamusoro yekushambadza.

Ndinogona here kudzora kusimba kwezwi mu M4A kusvika ku AMR?

Yeah — loudness-normalize sarudzo inoshandisa ITU-R BS.1770 / EBU R128 normalization kune AMR output, ichitarisa -14 LUFS (streaming standard), -16 LUFS (podcast standard), kana -23 LUFS (audiobook standard).