Nhanganyaya ku HE-AAC
HE-AAC (iyo inowanzotumidzwa seAacPlus ) inorasikirwa nehutachiona hwemajeri uye inopfupika neHigh Efficiency Advanced Audio Encoding. Yakanakira kushandiswa nekutumbuka mishumo yemavhidhiyo umo madiki madhigiri akadai akadai seInternet Radio, kushanyira mimhanzi yemitambo, nezvimwe. Kune ikozvino mapurogiramu maviri echinyorwa ichi chinopihwa se HE-AAC uye HE-AAC V2. Shanduro yechipiri inoshandisa kushandiswa kwezvinhu zvakasimbiswa uye inonyanya kuenzaniswa kupfuura yekutanga ye (HE-AAC).
Kutsigira kweHe-AAC Format
Mumimhanzi ye digital, kune mienzaniso mizhinji yekuti ma format HE-AAC anotsigirwa sei uye anoshandiswa. Izvi zvinosanganisira:
- Software Media Players - Pane zvakawanda zvakasiyana-siyana mukusiyana kwakaita jukebox software maitiro ekutsigira fomu HE-AAC. Somuenzaniso, iTunes (chinyorwa 9 nepamusoro) uye Winamp (pro version) inotsigira zvose HE-AAC kukodha nekugadzirisa. Zvisinei, dzimwe dzakawanda zvirongwa zvakakurumbira zvakadai saFoobar2000, VLC Media Player, nezvimwewo, zvinotsigira chete kutamba kwemafaira eEA-AAC akafambiswa.
- Purogiramu yeMimhanzi Inoparidzirwa - Mimhanzi yemitambo yakadai sePandora Radio neRhapsody inoshandisa HE-AAC kudzvinyirira hurongwa hwekugadzirisa zvakanakisisa inzwi rakanaka kune vashandisi varo. Kushandisa HE-AAC, kudiwa kwechikwata chepachikwata chekushambadzira kunonyanya kuderera kudarika mamwe maitiro e- codec - audio inogamuchirwa inogona kuendeswa yakaderera se 32 Kbps munguva zhinji.
- Internet Radio - Sezvo HE-AAC iri kunyanya kubhadhara zvishoma, urongwa hwekunyengedzera uku hwakanaka kune zviteshi zveredhiyo kuitira kuti utumidze kuparidzwa kwemashoko munguva chaiyo.
The First Version ye HE-AAC
Vadzivisi ve HE-AAC, Coding Technologies , vakatanga kugadzira kushandiswa kwehurongwa kuburikidza nekubatanidza Spectral Band Replication (SBR) muAAC-LC (yakadzika midziyo yeAAC) - zita rekutengeserana iro kambani rinoshandisa CT-aacPlus. SBR (iyo Coding Technologies yakagadzirwawo) inoshandiswa kuwedzera izwi nekunyatsogadzirisa coding frequencies. Izvi zvinyorwa zvekugadzirisa teknolojia, iyo inonyanya kukosha pakutsvaga izwi rinoendesa mberi, inoshanda nekubudisa hupamhi hwepamusoro nekuderedza zviduku-idzi dzinochengetwa pa 1.5 Kbps.
Muna 2003 HE-VAC V1 yakagamuchirwa nesangano re MPEG uye yakabatanidzwa mumutauro wavo we MPEG-4 sezwi rinoteerera (ISO / IEC 14496-3: 2001 / Amd 1: 2003).
Shanduro yechipiri ye HE-AAC
HE-VAC V2 iyo yakave yakagadzirwa neCoding Technologies ishanduro yakasimbiswa ye HE-AAC yakambosunungurwa uye yakatumidzwa zvakananga nekambani seEnhanced AAC +. Ichi chipiri chekudzokorora chinosanganisira kukurudzira kunonzi Parametric Stereo.
Sezvo pamwe nekubatanidzwa kweAAC-LC neSBR kuitira kunyatsoona coding audio sezvakatanga kugadziriswa kwe HE-AAC, shanduro iyi yechipiri inewo chimwe chimwe chinowedzera chinonzi, Parametric Stereo - izvi zvinotarisa kunyatsogadzirisa zviratidzo zve stereo. Panzvimbo pokushanda muzviitiko zvinowanzoitwa seSBR, chigadzirwa cheParametric Stereo chinoshandisa nekusika ruzivo rwomumativi pamusoro pemisiyano pakati pemigwagwa yakasara uye yakarurama. Iyi ruzivo rwemashoko rinokwanisa kushandiswa kurondedzera urongwa hwakakosha hwechifananidzo che stereo mu HE-AAC V2 based audio file. Apo muchengeti wemodhi anoshandisa huwandu hwehuwandu hwemashoko epakati, stereo inogona kuva yakatendeka (uye inobudirira) inoburitswa panguva yekutamba apo uchichengetedza bitrate yekutambisa audio kusvika zvishoma.
HE-VAC V2 inewo mamwe matanho ehurukuro mubhokisi rayo rekushandisa rakafanana nekudzika pasi stereo kusvika mono, kukanganisa kwakavanzika, uye kupera patsva. Kubvira pakugamuchirwa kwayo uye kuenzaniswa nemusangano we MPEG muna 2006 (seI ISO / IEC 14496-3: 2005 / Amd 2: 2006), yave ichizivikanwa se HE-AAC V2, aACPlus v2, uye eAAC +.
Uyewo Anozivikanwa se: aac +, CT-HE-AAC, eAAC
Alternate Spellings: CT-aacPlus