M4A → WAV

Sichoncho, ndipo ndibwino kuti mukhale wopanda kanthu: palibe chomwe chingachitike. M4A chomwe chatha kuchotsa mfundo zazikulu panthawi yake yoyamba yolemba, ndikuyika zomwe zilibe kanthu WAV zimasunga zomwe zilibe kanthu - sichoncho. Fayilo imakula nthawi zambiri ndipo imawoneka ngati yofanana. Ndibe njira yoyenera yosinthira, chifukwa WAV siyiwonjezera chitukuko chachiwiri cha artefacts pamene mukutumiza. WAV ndi bwino mtundu kwa kusintha, mastering ndi archiving, chifukwa chakuti angathe re-encoded nthawi iliyonse popanda kusonkhana artefacts. M4A amachititsa zinthu ziwiri kwambiri zosiyana m'mbuyo kwa m'modzi kuwonjezeka - lossy AAC ndi lossless ALAC - ndi non-Apple hardware thandizo ndi zosagwirizana.

Siyimagwira ntchito. M4A imathamanga ndi metadata block yoyenera, koma WAV siyimagwira ntchito yoyenera ya woimba, album, track number kapena cover art, choncho ma tag amatulutsidwa mosasokonezeka. Tengani M4A ngati kopita kosindikizidwa, kapena kulembanso kosindikizidwa pambuyo pake ndi chida monga Mp3tag kapena MusicBrainz Picard. WAV ndi lalikulu - pafupifupi 10 MB pa stereo mphindi pa CD quality - ndi classic mtundu ali 4 GB chipinda ndi palibe malo kwa ma tag bwino.

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.

Mtengo woyambirira ndi 192 kbps kwa lossy WAV; pass-through kwa lossless WAV. 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.

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

Ndiyo — mutu, woimba, album, chaka, mndandanda wa nyimbo, ndi zithunzi za album zimawerengedwa kuchokera ku M4A ndipo zimalemba ku WAV komwe mtundu umathandizira ma tag. Zomwe zimadziwika bwino (MP3, AAC, FLAC, OGG) zimasamalira ma tag bwino; WAV yosapanga dzimbiri siyichita. WAV ndi Microsoft ndi IBM RIFF-ogwirizana audio chidebe kuchokera 1991, ndipo ndi zimene pafupifupi aliyense audio interface ndi DAW amalemba pa record.

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.

Mwa default yes — 48 kHz M4A imakhala 48 kHz mu WAV. 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.

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

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 WAV codec yosinthidwa kwa zida zanu zofunikira.

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.