Kenyelletso ho HE-AAC
HE-AAC (e atisang ho bitsoa aacPlus ) ke mokhoa o lahlehileng oa khatello ea lisebelisoa tsa digital mme e khutšoanyane bakeng sa High Efficiency Advanced Advanced Encoding. E ts'ebelisitsoe bakeng sa tšebeliso ea lits'ebeletso tsa melumo ea molumo moo ho hlokahalang litekanyetso tse fokolang tse kang Inthanete ea Radio, litšebeletso tsa 'mino oa ho phallela, joalo-joalo. Ho na le liphetolelo tse peli tsa leano lena la ho hatella le hlahisitsoeng ka HE-AAC le HE-AAC V2. Phetolelo ea bobeli e sebelisa lisebelisoa tse ntlafetseng haholo 'me e ts'oaroe ho feta ea pele (HE-AAC).
Tšehetso bakeng sa Fomati ea HE-AAC
Ka 'mino oa digital, ho na le mehlala e' maloa ea mokhoa oa HE-AAC o tšehetsoang le o sebelisitsoeng. Tsena li kenyelletsa:
- Software Media Players - Ho na le mefuta e fapaneng ea kamoo likarolo tse fapaneng tsa li-software tsa jukebox li tšehetsang mofuta oa HE-AAC. Ka mohlala, iTunes (phetolelo ea 9 le e holimo) le Winamp (pro version) e tšehetsa khokahano ea HE-AAC le ho khetholla. Leha ho le joalo, mananeo a mang a mangata a ratoang a kang Foobar2000, VLC Media Player, joalo-joalo, a tšehetsa feela ho bapala ha lifaele tsa audio tse kentsoeng HE-AAC.
- Litšebeletso tsa 'Mino oa phallela - Litšebeletso tsa ' mino oa Inthanete joaloka Pandora Radio le Rhapsody li sebelisa tsamaiso ea compression ea HE-AAC ho kenya melumo ea boleng bo phahameng ho basebelisi ba eona. Ho sebelisa HE-AAC, litlhoko tsa motlakase bakeng sa ho phallela li tlaase haholo ho feta mekhoa e meng ea codec - mohala o amohelehang o ka fanoa ka tlaase ho 32 Kbps maemong a mangata.
- Inthaneteng Radio - Kaha HE-AAC e sebetsa ka mokhoa o tlase ka litekanyetso tse fokolang, leano lena la khatello ea kelello le loketse bakeng sa liteishene tsa seea-le-moeeng hore li phatlalatse lipapatso tsa tsona ka nako ea sebele.
Tlhahiso ea Pele ea HE-AAC
Bahlahisi ba HE-AAC, Coding Technologies , ba ile ba qapa mokhoa oa ho ikemela ka ho kopanya Spectral Band Replication (SBR) ho AAC-LC (e tlase e rarahaneng ea AAC) - lebitso la khoebo eo k'hamphani e e sebelisang ke CT-aacPlus. SBR (e leng Coding Technologies e boetse e hlahisitsoe) e sebelisetsoa ho ntlafatsa molumo ka ho ngolisa mekhoa e phahameng ea likoloi ka mokhoa o nepahetseng. Theknoloji ena ea ho ntlafatsa litsebi, e leng molemo ka ho khetheha bakeng sa ho phallela lentsoe la lentsoe, e sebetsa ka ho hlahisa mekhahlelo e phahameng ka ho fetisetsa lintho tse tlaase - tsena li bolokoa ka 1.5 Kbps.
Ka 2003 HE-AAC V1 e ile ea amoheloa ke mokhatlo oa MPEG mme e kenyelelitsoe lenaneong la bona la MPEG-4 e le tekanyetso ea molumo (ISO / IEC 14496-3: 2001 / Amd 1: 2003).
Phetolelo ea Bobeli ea HE-AAC
HE-AAC V2 e neng e boetse e hlahisoa ke Coding Technologies ke phetoho e ntlafetseng ea HE-AAC e sa tsoa lokolloa 'me e bitsoa ka molao ke k'hamphani e le Enhanced AAC +. Phetolelo ena ea bobeli e kenyeletsa ntlafatso e bitsoang Parametric Stereo.
Hape hammoho le motsoako oa AAC-LC le SBR bakeng sa ho ngolisa molumo ka tsela e nepahetseng joaloka ha e ntlafatsoa ka lekhetlo la pele la HE-AAC, phetolelo ena ea bobeli e boetse e na le sesebelisoa se eketsehileng se bitsoang Parametric Stereo - sena se lebisa tlhokomelo e matla ea ho fokotsa matšoao a stereo. Ho e-na le ho sebetsa maemong a tloaelehileng a mahlahahlaha joalo ka tabeng ea SBR, sesebelisoa sa Parametric Stereo se sebetsa ka ho theha tlhahiso-leseling ka lehlakoreng le leng mabapi le phapang pakeng tsa liteishene tse letšehali le tse nepahetseng. Boitsebiso bona ba lehlakoreng bo ka sebelisoa ho hlalosa tokisetso ea sebaka sa setšoantšo sa stereo ka faele ea audio ea HE-AAC V2. Ha mochine oa decoder a sebelisa boitsebiso bo eketsehileng ba sebaka, stereo e ka tšepahala (le ka katleho) e hlahisitsoe nakong ea papali ha e ntse e boloka bitrate ea audio e phallelang bonyane.
HE-AAC V2 e boetse e na le lisebelisoa tse ling tsa molumo ka lebokoseng la tsona la lithulusi tse kang ho thella stereo ho mono, phoso ea ho pata, le ho ts'oaea ha spline. Ho tloha tumellanong le tumello ea eona ka mokhatlo oa MPEG ka 2006 (e le ISO / IEC 14496-3: 2005 / Amd 2: 2006), e tloaelehile ka ho tsebahala e le HE-AAC V2, aacPlus v2 le eAAC +.
E boetse e tsejoa e le: aac +, CT-HE-AAC, eAAC
Mefuta e meng ea Spellings: CT-aacPlus