Guqula AMR kuya M4A

Guqula Eyakho AMR kuya M4A imibhalo kalula

Khetha amafayela akho

*Amafayela asusiwe ngemva kwamahora angu-24

Guqula amafayela afinyelela ku-1 GB mahhala, abasebenzisi be-Pro bangaguqula amafayela afinyelela ku-100 GB; Bhalisa manje

Ukulayisha

Indlela yokuguqula AMR kuya M4A

Isinyathelo 1: Layisha eyakho AMR amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho M4A amafayela

AMR kuya M4A Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiguqula kanjani umsindo AMR ube M4A ngaphandle kokulahlekelwa ukhwalithi?

Layisha phezulu ihele AMR futhi umguquli wethu uzokhetha i M4A codec / bitrate ukuhlanganisa okuhambisana nomsuka. Inhloso engalahleki (M4A = WAV / FLAC / ALAC) igcina yonke isampula; inhloso elahlekile (M4A = MP3 / AAC / OGG / Opus) iphutha liyi 192 kbps ecacile kumazwana amaningi.

Ihele M4A lisebenzisa i-bitrate enjani?

Iphutha 192 kbps ku M4A olahlekelwayo; dlula-ngaphaya (akukho sinqumo se-bitrate) ku M4A okungabi nalutho. Nciphisa ku 320 kbps ku-audiophile output, noma 96 kbps ku-voice / podcast lapho amafayela amancane abalulekile kuneqiniso ezindaweni eziphezulu.

Ingabe ukusuka ku AMR kuya ku M4A kuzonciphisa ubunjani bomsindo wami?

Uma AMR ilahlekelwa futhi M4A ayilahleki (isibonelo MP3 -> WAV), ihele M4A alingcono kuna AMR — awukwazi ukubuyisela imininingwane edlulele. Uma AMR ilahlekelwa futhi M4A ayilahleki, i-M4A codec icindezela futhi; ku-192 kbps lokhu kucacile kuningi kwezithameli.

Ingabe i-AMR kuya ku-M4A igcina amathegi we-ID3 / metadata?

Yebo — isihloko, umculi, i-album, unyaka, inani le-track, kanye ne-album efakwe isithombe zifundwa kusuka ku AMR futhi zibhalwe ngaphakathi kwe M4A ibhokisi lapho i-M4A ifaka khona izixhumanisi (ezizokwenziwa yizo zonke ezijwayelekile).

Ingabe ngingenza i-batch yokuguqula amahele angama-AMR abe M4A?

Yebo — susa isibaya se AMR amafayela ngaphakathi futhi sizoziphatha ngokufanayo. I-Pro inemisebenzi eminingi efana ne-parallel futhi akukho lutho oluphezulu lwesayizi yefayela ngalinye, ngakho-ke i-500-file batch iphele ngemizuzu endaweni yamahora angama-10.

Ingabe i-M4A izogcina isilinganiso esifanayo sesampula njenge-AMR?

Ngokuzenzakalela yebo (48 kHz AMR -> 48 kHz M4A). Uma ufuna ukusatshalaliswa okuphansi kokuhambisana (isibonelo 96 kHz -> 44.1 kHz yokushaya i-CD) isinqumo esiphezulu sesampula-rate siphatha lokhu ngesampula esezingeni eliphakeme le-polyphase.

Ingabe ngizolungisa umsindo ku-AMR kuya ku-M4A?

Yebo — ukhetho lokujwayelekile-lokujwayelekile lufaka ITU-R BS.1770 / EBU R128 ukujwayelekile ku M4A kuphuma, libhekisa ku -14 LUFS (isizinda sokushayela) noma -16 LUFS (isizinda sepodcast). Kuhle uma uguqula amabhayisikobho ngezinga lokuphatha elihlukile.

Ingabe i-M4A izodlala ku-stereo yemoto yami / iPod / Sonos?

MP3 idlala jikelele. AAC idlala ku Apple, Android abaningi, kanye Sonos. FLAC idlala ku Sonos kanye Android yamanje, ngaphezu kahle ku iPods edlule. WAV idlala konke kodwa kukhulu. Izinketho eziphezulu zifaka idivayisi presets lezi izinhloso ezivamile.

Ingabe ihele lami AMR liyimfihlo ngesikhathi sokuguqulwa?

Yebo — amafayela alayishwe phezulu AMR aqhubekelwa phambili emisebenzini ehlukanisiwe futhi acishwe ngaphakathi kwemizuzu. Asikwazi ukudlala, ukugcina, noma ukuhlanganisa okuqukethwe kwesandi. Bona /privacy/ ngefasitela lokugcinwa kwedatha.

Ingabe kuthatha isikhathi esingakanani ukushintsha ihora le-AMR libe M4A?

I-codec efanayo iphinde i-mux: imizuzwana engu-10-30. Yenza kabusha i-codec ehlukile: ngokuvamile 10-20% yesikhathi somthombo, ngakho-ke ihora AMR -> M4A liphele ngemizuzu engu-6-12 kwipayipi elijwayelekile.

Kungani ihele M4A likhulu / lihlanzekile kunalelo AMR?

Akukho shintsho lokufinyelela oluzenzakalelayo kwenziwa ngaphandle kokuthi uvule isinqumo sokujwayelekile. Uma ubona ushintsho lwezinga, umdlali wakho wesandi noma ithala lemithombo kungase kusebenzise ReplayGain noma ukuguqulwa kwe-track-by-track kudlala — hhayi nathi.

Ingabe ngiguqula ama-AMR alayishwe phansi abe M4A?

Uma i-AMR ilayishwe phansi ingakhuselwanga (akukho DRM), yebo. Amafayela we-streaming abhalwe nge-DRM (i-Spotify, i-Apple Music) abhalwe nge-crypto ku-bit level futhi asikwazi ukuwaphatha. Ama-sources e-Bandcamp, SoundCloud, nama-recordings asekhaya aguqulwa kahle.