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 Ukushintsha

Yini ihele AAC?

I-AAC (i-Advanced Audio Coding) iyifomethi yokucindezela umsindo wedijithali elahlekile eyenzelwe ukuba ilandele i-MP3.

Ingabe ubuhle bulahlekile kuhele AAC?

Noma yini encoder yakuqala ekhetha ukuyisusa, futhi ayikwazi ukubuyiselwa. AAC icindezela ngokumodela lokho okungekuqaphela indlebe - imisindo ekhululekile ehlala ngaphansi kwezikhulu, iziqongo eziphezulu zokulalela - futhi isuse ngokuqhubekayo. Ku-bitrate ephephile engeke ikwazi ukulalela wonke umuntu. Okunye okungaba khona kubuyiselwa emuva, ngakho ukushintshana kufomethi engalahlekelwa yisimo samanje ngaphandle kokubuyisela okungaphambili. I-AAC ilahlekelwa yizinto kodwa isebenza kahle kunayo i-MP3, futhi iphatha kuze kube yi-48 channels ngokusemthethweni ngaphezu kokuboshwa ku-stereo design.

Kungani umsindo ungekho kufoni yami AAC?

Ngenxa yokuthi i-handset ikhonjiswa nge-chip ngaphezu kwe-processor, futhi lokhu kuyifomethi eyenziwe yi-silicon. Amamemo omsindo, ama-video soundtracks nama-message clip wonke aphuma kulowo mqolisi, ngakho-ke babelana ngefomethi engahambisani nalokho okwenzekile. Idlala ku-Apple hardware ngaphandle kombono futhi idinga ukushintshwa ngaphezu kwezikhathi eziningi kuwo wonke amanye.

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 okuguqula ukurekhodwa okungekuhle kube yifomethi evame ukuba 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, 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 nokushintsha ifayela oline.

Ingabe ukushintshana kushintsha isilinganiso sesampula se AAC yami yomsindo?

Akunakwenzeka ngaphandle kokuthi ucela. Ukuguquka kugcina umsuka wezinga — 48 kHz uhlala 48 kHz, 44.1 kHz uhlala 44.1 kHz — ngoba ukusatshalaliswa kabusha kubiza kakhulu futhi akusebenzi uma akukho okudingayo. Iziphuzo zikhona: ama-CD omsindo adinga u-44.1 kHz, abanye abadlali behardware abadala bamukela okuthile, futhi amapayipi omsindo avame ukudinga u-16 kHz. Misela izinga ngokucacile ngalezi zinkinga bese ushiya icala linye.

Ingabe ngingenza ngiphinde ngibize isiqephu endaweni yokushintsha AAC?

Kunzima kakhulu, futhi kufanelekile ukuqonda ukuthi kungani: isithonjana siyisihloko, ngenkathi ama-bytes ngaphakathi kufakwe ngefomethi eyodwa ekhethekile. Ukushintsha igama kwenza ihele igama lakhe lithembisa okuthile okuqukethwe kwayo akusho ukunikela, futhi noma yini evula ihele noma liyiphoqa noma liyifunda kabi. Ukuphela kwephutha elincane yifomethi ezimbili ezikhona ngokusemthethweni ibhokisi elifanayo ngaphansi kwezinhlamvu ezahlukene — futhi ngisho lapho ukuphinda ubhale kahle kuphephile kunalokho ukushintsha igama.

Ingabe ngiguqula isibaya esigcwele se AAC amafayela ngasikhathi sinye?

Nge-akhawunti, yebo — khiphana ndawonye futhi zibekwe njengemisebenzi eyodwa endaweni yokuphathwa ngayinye ngasikhathi sinye, ngezinhlelo ezifanayo ezisetshenziswa ngaphesheya kweqembu futhi izimpendulo zibuyiselwe ndawonye. Ukuguquka okumahhala kusebenza ihele elilodwa ngasikhathi sinye (amathuluzi okuxhuma athatha amabini); i-plan ekhokhelwa yilokho okuvulela ukuqhubekeka kweqembu kanye nobukhulu bomgwaqo wefayela ngalinye, okukwenza ukuguquka kwehele lonke lisebenze.

Yini ezoba nehele lami AAC ngemuva kokuguqulwa?

Kususwa. Ukulayisha kanye nemiphumela eguqulwe zombili zihlala kumhlinzeki kuphela uma umsebenzi ufuna futhi zisuswa ngokuzenzakalela; ukudluliswa kuhamba nge HTTPS emigwaqweni emibini. Akukho muntu ofunda okuqukethwe, akukho okuhlobene, futhi akukho okudluliswa kunoma ubani. Uma ufuna ukuyeka ukulindela ukuhlanzwa okuzenzakalelayo, ukuvala umsebenzi kuzosusa amafayela ngokushesha.