Guqula M4A kuya AMR

Guqula Eyakho M4A kuya AMR amadokhumende ngokulula

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Indlela yokuguqula M4A kuya AMR

Isinyathelo 1: Layisha eyakho M4A amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

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

Isinyathelo 3: Landa i-version yakho AMR amafayela

M4A kuya AMR Imibuzo Evame Ukubuzwa Yokuguqulwa

Ingabe M4A kuya ku AMR ukuguqulwa kubuyiselwa emuva?

Ungaguqula i-AMR emuva ku-M4A kule site. Uma ifomethi eyodwa ilahlekile, i-round-trip ayilungile noma ngabe ibukeka noma izwakala ifana.

Yini ikhwalithi yesipiliyoni okufanele ngilinde kusuka ku-M4A kuya ku-AMR?

Izilungiselelo ezizenzakalelayo zidinga ukusakazwa / ukhwalithi ye-web — ngokubona kufana nomthombo weningi labasebenzisi. Ukusetshenziswa kwegobolondo, khetha ukhetho lwekhwalithi ephezulu kuzinhlelo zokushintsha.

Ingabe ukushintsha M4A kuya ku AMR kuyingxenye yesithathu yokucindezela okulahlekile?

Yebo, futhi kufanelekile ukuhlela. Izifomethi zombili ziyi-lossy, ngakho-ke i AMR encoder isebenza kusuka kumsindo osele udlulele esinye isikhala se-psychoacoustic, futhi iziphakamiso zayo zihlanganisa isiqephu sokuqala. Ku-192 kbps noma ngaphezulu, imiphumela ihlala icacile kakhulu. Uma une master engalahlekelwa yilutho, ukukopisha i AMR kusuka lapho kunciphisa isikhala esimibili ngokuphelele. M4A igcina i-AAC emibonweni eminingi, noma i-Apple Lossless (ALAC) uma ivela ku-lossless rip. I-AMR iyi-narrowband speech codec esebenza phakathi kuka-4.75 no-12.2 kbps, emodela i-human vocal tract endaweni yobubanzi obugcwele be-audio spectrum.

Ingabe izihloko zesikhashana sami kanye nesithombe se-albhamu sizohlala isikhathi eside uma siguqulwa M4A kuya ku AMR?

Akunalutho. M4A ifaka i-metadata efanele, kodwa AMR ayinaso isikhala esijwayelekile somuntu oculi, i-albhamu, inani le-track noma umhlobiso we-cover, ngakho-ke amathegi asuswa ngaphandle kokulahleka. Gcina i-M4A njengekhophi elabelwe, noma uphinde ubeke i-tag ngemuva ngethuluzi njenge Mp3tag noma MusicBrainz Picard. I-AMR ibulala umculo: i-8 kHz bandwidth yayo isusa konke okuphezulu kwe-frequency yefoni, futhi akukho inani lokuphindeka kokucofa liyibuyisela emuva.

Yini okushoyo ihele AMR?

Ukuhamba okuncane kwefremu yomsindo okhonjiswanga ngaphandle kwebhokisi elijikelezayo. Lokhu kusho ukuthi amafayela amabili AMR angaxhunywa ngokulula ngokubeka elinye ngemuva kwelinye, futhi ngokufanayo kusho ukuthi konke okungaphezu komsindo - ubude, ukufuna isibalo, ukuhoxa umdwebo - kufanele kufakwe ibhodlela njengenhlanganiso ngaphezu kokuyingxenye yefomethi, ngakho umdlali kufanele afunde ihele lonke ukuze asebenze ukuthi lide kangakanani. Kulokhu, into elula kakhulu ebizwa ngokuthi ihele lomsindo, okuwukuthi kungani livela ngaphakathi kwezinye izibhokisi ngaphezu kokuvela ngokwalo.

Kungani ifoni yami noma ithebhulethi irekhoda ku M4A?

Ngenxa yokuthi yilokho okukhiqizwa yi-hardware encoder kwidivayisi. Amamemo omsindo, ukurekhodwa kwesikrini kanye ne-audio track yenoma yini efilmwe kwifoni iphuma njenge M4A ngaphandle komuntu okhetha lokhu, ngakho-ke amafayela amaningi afika kulo futhi kungani ukhwalithi ingcono kunesayizi yefayela ebonisa. Akukho lutho oluzomisa ukuguquka; kusho ukuthi umsuka ukhonjiswa kathathu, yi-chip elungele impilo yebhethri ngaphezu kokungafani. M4A yi MP4 ibhokisi elimaza umsindo kuphela, futhi lokhu iTunes, Apple Music kanye iPhone Voice Memos app kukhiqiza.

Kungani ezinye ze M4A zefayela lami zingaguqulwa?

DRM. Iqoqo elincane lamafayela M4A libhalwe ngokufihlakele yisitolo noma isofthiwe eyenza, futhi umsindo obhalwe ngokufihlakele awukwazi ukukhishwa yinoma iyiphi i-convertor. Noma yini oyidingayo, orekhodiwe, noma othengiswe ngaphandle kokuvikelwa uguqulwa ngokuvamile; ukuthengiswa kwelayisense akuzokwenza. M4A ifihla izinto ezimbili ezihlukile kakhulu emuva kolunye ubanzi - lossy AAC kanye lossless ALAC - futhi hhayi-Apple hardware usizo akulingani.

Ingabe kunelayisense exhunywe ku M4A?

Akuna omunye ongacabanga ngawo. I-codec ifakwe iziqukathi zepatenti, futhi ilayisense ibekwe ngumuntu othumela umbhalo oguquliwe — ifoni, i-browser, i-operating system — isikhathi eside ngaphambi kokuba ifayela lifike kuwe. Lokhu kusho ukuthi ifomu likhona kuwo wonke amahardware, futhi kungani izinketho ezingenazo i-royalty zikhiwa. Akunalutho olushintshayo mayelana nokushintsha ifayela olizithola, futhi kuyimibuzo ephilayo uma uthumela umbhalo oguquliwe wena.

Ingabe kunesikhawulo sobukhulu befayela uma uguqula i-M4A ibe yi-AMR?

Ukuguquka okumahhala kunesilinganiselo sobukhulu sehele ngalinye, esisetshenzisiwe ngohlobo lwehele, futhi ikhasi lizokutshela uma ihele lidlula kulo. Iphrojekthi ekhokhelwayo isusa lesi silinganiselo, ngakho amafayela amakhulu angaguqulwa.

Ingabe ngingenza ukuguqulwa kwe-batch kwefayela le-M4A elilodwa libe yi-AMR?

Amafayela amaningi emisebenzini eyodwa adinga iphrojekthi ekhokhelwa. Ukusetshenziswa okumahhala kuyisifayela esisodwa ngasinye sokuguqulwa, ukuguqulwa okufanayo ngehora. Kuphrojekthi ekhokhelwa ungangeza amafayela amaningi kumsebenzi owodwa, bese ulanda impendulo ngayinye yayo noma zonke ku-ZIP eyodwa.

Yini ezoba namafayela ami M4A ngemuva kokuguqulwa?

Amafayela alayishwe phezulu aphathwa kumaseva ethu okuguqula, akukho muntu obhekana nawo, futhi ahlukaniswe. Ukufaka kanye nohele oluguqulwe kususwa ngokuzenzakalela cishe amahora angu-24 ngemuva kokuguqulwa, okushiya isikhathi sokulanda imiphumela. Bona /privacy/ ukuphoqa okuphelele.

Yini izinhlelo ezidlala ihele AMR?

AMR idlala emidlalweni emikhulu yomculo, iziphequluli, nama-media library. I-iTunes / Apple Music, VLC, Foobar2000, nama-phone media apps aphatha lokhu ngokusemthethweni.