M4A → MP3

Sinthani Yanu M4A ku MP3 mafayilo mosavuta

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Kukweza

Momwe mungasinthire M4A ku MP3

Gawo 1: Kwezani yanu M4A mafayilo pogwiritsa ntchito batani lomwe lili pamwambapa kapena pokoka ndi kugwetsa.

Gawo 2: Dinani batani la 'Convert' kuti muyambe kusintha.

Gawo 3: Tsitsani pulogalamu yanu yosinthidwa MP3 mafayilo

M4A ku MP3 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji M4A audio ku MP3 popanda kuwononga mtundu?

Kutsitsa fayilo ya M4A ndipo wosinthira amasankha MP3 codec ndi bitrate kuti agwirizane ndi chiyambi. MP3 yopanda kusowa (WAV / FLAC / ALAC) imateteza zonse zomwe zimafanana; MP3 yowonongeka (MP3 / AAC / OGG / Opus) imayikidwa ku 192 kbps yomwe ndi yosawoneka bwino kwa amayi ambiri. M4A ali AAC m'malamulo ambiri, kapena Apple Lossless (ALAC) pamene anachokera ku lossless rip. MP3 ndi lossy: psychoacoustic model amachotsa ma frequencies kuti nkhope sizingayembekezere kuti adziwe, makamaka pa 128 mpaka 320 kbps.

Kodi kusinthira M4A ku MP3 ndi gawo lachiwiri la kutsitsa kwa lossy?

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho MP3 encoder akuchita ntchito kuchokera ku audio yomwe yakhala ikuyenda mwa psychoacoustic pass, ndipo masankho ake oyamba amapanga gawo loyamba. Pa 192 kbps kapena pamwambapa, zotsatirazi ndizosawoneka bwino kwa ambiri owerenga. Ngati muli ndi master yopanda kuwonongeka, kulemba koyamba kwa MP3 kuchokera ku yomwe imalepheretsa kupitanso koyamba.

Kodi chimachitika ndi ma audio ambiri a multichannel pamene amasintha M4A ku MP3?

Idzaikidwa pansi pa stereo, chifukwa MP3 siyimakhala ndi njira yogwiritsira ntchito ma channel ambiri. Kulowetsa kumagwiritsa ntchito ma coefficients ovomerezeka kuti ma channel apakati azikhala owoneka bwino ndipo ma surrounds amaphatikizidwa pamalingaliro otsika. Chomwecho chilichonse chomwe chimadalirika pa malo osiyanasiyana a ma channel chimapita pamene izi zikuchitika. MP3 ndi mwaukadaulo outclassed ndi AAC ndi Opus pa zonse bitrate, sangathe kusungira zambiri kuposa awiri ma channels bwino, ndi nthawi zonse amawonjezera m'badwo wa encoder.

Nchifukwa chiyani ena a M4A anga a M4A sasintha?

DRM. Mtundu wa M4A mafayilo amasinthidwa ndi sitolo kapena pulogalamu yomwe idatulutsa, ndipo mawu osakira satha kusinthidwa ndi aliyense wosintha. Chomwecho chomwe mwachotsa, cholemba kapena chogula popanda kuteteza chimasinthidwa moyenera; kugula kwa licensed sichidzachitika. M4A amachititsa zinthu ziwiri kwambiri zosiyana m'mbuyo kwa m'modzi kuwonjezeka - lossy AAC ndi lossless ALAC - ndi non-Apple hardware thandizo ndi zosagwirizana.

Kodi fayilo yochokera ku MP3 idzagwiritsa ntchito bitrate iti?

Mtengo woyambirira ndi 192 kbps kwa lossy MP3; pass-through kwa lossless MP3. Chotsani 320 kbps kwa audiophile kapena 96 kbps kwa mawu / podcast. Chosankha chimasintha kukula kwa fayilo motsutsana ndi kumvetsera; pansi pa 96 kbps lossy artifacts amawoneka pa nyimbo.

Kodi kuchoka ku M4A kupita ku MP3 kumachepetsa mtundu wanga wa audio?

Ngati M4A ndi lossy ndipo MP3 ndi lossless (mwachitsanzo MP3 → WAV), MP3 si yabwino kuposa M4A — simungathe kubwezeretsa zambiri zomwe zatulutsidwa. Ngati M4A ndi lossless ndipo MP3 ndi lossy, MP3 codec imabwezeretsa; pa 192 kbps zotsatira zake ndi zosawoneka bwino kwa zinthu zambiri.

Kodi wosintha M4A kupita ku MP3 amasunga ID3 / metadata tags?

Ndiyo — mutu, woimba, album, chaka, mndandanda wa nyimbo, ndi zithunzi za album zimawerengedwa kuchokera ku M4A ndipo zimalemba ku MP3 komwe mtundu umathandizira ma tag. Zomwe zimadziwika bwino (MP3, AAC, FLAC, OGG) zimasamalira ma tag bwino; WAV yosapanga dzimbiri siyichita. MP3 ndi MPEG-1 Audio Layer III, anamaliza mu 1993, ndibe kwambiri universally decodable audio mtundu kuti ali.

Kodi ndingasinthire mamiliyoni a M4A mafayilo ku MP3?

Yai - tidzayika fayilo ya M4A ndipo tidzazipanga mofanana. Premium ili ndi ogwira ntchito ambiri mofanana ndi malire a fayilo, kotero fayilo ya 500 imatha m'maola angapo osati m'maola angapo.

Kodi MP3 idzakhala ndi kuchuluka kwa sampling yomweyo ngati M4A?

Mwa default yes — 48 kHz M4A imakhala 48 kHz mu MP3. Ngati mukufuna kuchepetsa kusamvana kwa ma CD (96 kHz → 44.1 kHz kwa kulemba CD), kusankha kwa kusamvana kwa ma CD kumagwiritsa ntchito kusamvana kwabwino kwambiri panthawi yolemba ma CD.

Kodi ndingasinthire kuwala kwamphamvu pamene ndikusintha M4A kupita ku MP3?

Ndiyo — njira yosintha mawu kuti akhale oyenera imagwiritsa ntchito ITU-R BS.1770 / EBU R128 kuti ikhale yoyenera kwa MP3, yolenga -14 LUFS (zoyenera kusewera) kapena -16 LUFS (zoyenera kusewera podcast).

Kodi MP3 yanga idzasewera pa stereo yagalimoto, iPod, ndi Sonos?

MP3 imasewera kulikonse. AAC imasewera pa Apple, ambiri a Android, ndi Sonos. FLAC imasewera pa Sonos ndi Android koma si pa iPods oyambirira. WAV imasewera pa chilichonse koma ndichodabwitsa. Kusintha kwa chipangizo chatsopano chimasankha MP3 codec yosinthidwa kwa zida zanu zofunikira. Sichoncho beats MP3 kwa kugwirizana - car stereos, gym zida, DAPs ndi zaka makumi awiri hardware onse kuwerenga izo popanda funso.

Kodi fayilo yanga M4A ndi yapadera pamene ikusintha kukhala MP3?

Ndikofunika — fayilo ya M4A imatha kuchitidwa m'ma worker osiyana ndipo imatha kuthetsedwa m'maola ochepa. Tisaseweranso, sitisunga nthawi yaitali, kapena sitigawana zomwe zili pa audio.

M4A

M4A ndi mtundu wamafayilo omvera womwe umagwirizana kwambiri ndi MP4. Imapereka kupsinjika kwapamwamba kwamawu ndi chithandizo cha metadata, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito zosiyanasiyana.