AAC Amathuluzi

Tshintsha AAC kuya futhi kusuka kumafomethi ahlukahlukene

Mayelana AAC

I-AAC inikeza ikhwalithi yomsindo engcono kune-MP3 ngama-bit rate afanayo, asetshenziswa yi-Apple Music kanye ne-YouTube.

Ukusetshenziswa Okuvamile

Ukulanda kwe-Apple Music ne-iTunes
Ukusakaza umsindo ku-YouTube
Umsindo wekhwalithi ephezulu kumafayela amancane kune-MP3

AAC Imibuzo Evame Ukubuzwa Yokuguqulwa

Yini ihele lomsindo le-AAC?

I-AAC iyifomethi yomsindo olahlekelwayo. Umbhalo-mbhalo ususa izifremu ezingadingekile nezisindo ezifihlakele ukuze zifike kubukhulu befayela okuncane njengengxenye yesithupha ye-equivalent engacindezelwanga. Ukubuyisela umbhalo-mbhalo we-AAC kufomethi enye elahlekelwayo kwenza ukuthi kulahlekelwa umgangatho wesikhathi; uguqule kusuka ku-lossless master uma kukhona. I-AAC iyifomethi yomsindo ye-Apple yesigaba sokuqala futhi iyiphutha lezinhlelo zokusebenza eziningi ze-iOS kufaka phakathi i-Voice Memos ne-Music app.

Ingabe kukhulu kangakanani ukubukeka okulahlekile kuhele AAC?

Noma yini oyenzayo i-encoder yakuqala isinqume ukuyisusa, futhi ayikwazi ukubuyiselwa. AAC icindezela ngokumodela lokho okungeke kuphawulwe yindlebe — umsindo ohlanzekile ohlala ngaphansi kwalawo anamandla, ukusakazeka ezindaweni eziphezulu zokulalela — futhi isuse ngokuqhubekayo. Ku-bitrate ephephile engeke ikwazi ukulizwa yinoma ngubani. Okungaba khona kubuyiselwa emuva, ngakho ukushintshana kufomethi engalahleki igcina isimo samanje ngaphandle kokubuyisela okungaphambilini. I-AAC ilahlekelwa yizinto kodwa isebenza kahle kunayo i-MP3, futhi iphatha kuze kube yi-48 channels ngokusemthethweni ngaphezu kokuboshwa ku-stereo design.

Kungani ifoni yami igcina konke njenge AAC?

Ngenxa yokuthi i-handset ikhonjiswa kunoma yini i-chip yayo eyenza kwi-hardware, futhi AAC yilokho okuhlelwe ngaso i-silicon. Ikhamera i-app ayibuzanga — ibhala ifomu elisetshenziswa likwazi ukulikhiqiza ngezinga lefreyimu eligcwele ngaphandle kokufudumeza. Ukushintsha ngemuva kujwayelekile futhi akudingeki lutho kukhwalithi uma ukhetha okudingayo okugcina u-payload ofanayo. I-AAC iyi-Advanced Audio Coding, ejwayelekile ngo-1997 njenge-MPEG-2 Part 7 futhi ifakwe ngokucacile ukushintsha i-MP3.

Ingabe umculi, i-album nesithombe sokuzivikela ku AAC yami sizohlala siguqulwa?

Bakwenza lapho ifomu eligunyaziwe linesizinda sokubeka. AAC lithwala izithonjana nemisebenzi yezandla efakwe njengengxenye yefayela, futhi ukuguqulwa kwenza amakhophi ngaphesheya kwendawo elingaqondakalayo. Izithonjana ezingacindezelwanga ziyisinqumo - zicacisiwe ngaphambi kokuphawula kwakuyithemba elijwayelekile futhi zigcina cishe akukho, ngakho ithala eliguqulwe ngalo ndlela lifika njengedonga lemisindo engabizwanga.

Ingabe ihele AAC lingathwala i-5.1 surround mix?

Yebo - ifomu liphatha iziqhagamshelanisi ezingaphezu kwezingu-2 ngokufanele, ngakho-ke ukuhlanganisa okugqamile kugcina isakhiwo sesiqhingi saso ngaphandle kokucindezelwa kwe-stereo ngendlela efanele. Uma ukhuluma ngayo njenge-surround kuxhomekeka kukuphela kokuphela: umlayezo uzosusa wonke ama-channels, ifoni izocindezela phantsi ngesikhathi sokudlala ngaphandle kokukhathazeka. Ukushintshana ku-stereo-only format kwenza ukuthi ucindezelwe ngokuqhubekayo.

Ingabe AAC izodlala ngokuqondile kwikhasi le-web?

Yebo. AAC iphakathi kwefomethi yomsindo i-browser iyi-decode, ngakho ingafakwa kungxenyekazi yomsindo noma kumdlali wepodcast futhi isebenza kuwo wonke amathuluzi ngaphandle kweplugin noma ihele elibuyela emuva. Lokhu kwenza kube yinjongo yoshicilelo ephephile, futhi yilokho okushintsha ukurekhodwa okungekuhle kube yifomethi evame ukube yindlela encane yokuyithola idlala kuwebhusayithi. I-AAC izwakala ingcono kakhulu kune-MP3 ngaphansi kuka-128 kbps futhi iyi-audio track ejwayelekile ku-MP4, YouTube, Apple Music ne-broadcast.

Yini i-bitrate okufanele ngiyiguqule amafayela ami AAC?

Uhlu lwendawo esiya kuyo, hhayi umsuka. Ukudlalwa kwengoma, 256 kuya ku-320 kbps kucacile kuwo wonke umuntu olalelayo; ukukhuluma nokulalela ipodcasts, 96 kuya ku-128 kbps kuningi futhi kushiya ihele ngaphesheya. Ukungenisa umsindo ngaphezu komsuka we-bitrate kulahlekile isikhala — kugcina umsindo osele udlulele nge-lossy pass futhi akubuyiseli lutho umngenisi wokuqala olahlekile.

Ingabe ukusebenzisa AAC kuthatha ilayisense lepatenti?

Akunakho okukudingayo. Ama-codecs ahlobene ahlobene ne-patent pools, futhi ilayisense ibekwe ngabantu abathumela ama-decoders — ifoni, i-browser, i-operating system — isikhathi eside ngaphambi kokuba ihele lifike kuwe. Lokhu kusho ukuthi ifomu likhona kuwo wonke amahardware futhi kungani ama-royalty-free alternatives akhona, futhi ashintshanga noma yini mayelana nokushintshana kwefayela oline.

Ingabe i-AAC ilahlekelwa noma ayilahlekelwanga?

I-AAC ilahlekelwa — umbhalo-mbhalo ususa idatha umbhalo-mbhalo ucabanga ukuthi ayikwazi ukulinganiswa ukuze ifike kubungakanani befayela elincane. I-AAC ifakwe ipatenthi, futhi ama-players amasha ambalwa angeke avumeleke lapho befuna khona uku accetta i-MP3.

Yini okufanele ngiguqule i-AAC ibe kuyo ukuze ngiyihlukanise?

Ukudlulisa i-imeyili kanye nokudlulisa imidiya yomphakathi, guqula i-AAC ibe yi-MP3 — ukudlulisa okuphelele nobukhulu befayela elincane. Ukudlulisa okuphezulu-ukuzinikela nabangani besandi, guqula ube yi-FLAC noma i-WAV ukuze ugcine ukhwalithi yokuqala.