Kodi kusintha kwa AAC kumapangitsa kuti zikhale bwino pazochitika zonse?
Mungaganize kuti apulo ali ndi udindo wopanga mawonekedwe a AAC Plus (nthawi zina amatchedwa AAC +). Koma, kwenikweni, dzina la malonda ogwiritsiridwa ntchito ndi Coding Technologies kwa maonekedwe awo a HE-AAC V1. Ngati mukudabwa kuti dzina lake NDIMI likuimira chiyani, ndiye kuti ndilo lalifupi kuti Pulogalamu yapamwamba ifike . Ndipotu, AAC Plus nthawi zambiri imatchedwa HE-AAC m'malo mogwiritsa ntchito dzina loposa kapena chizindikiro.
Mawonekedwe a ma fayilo opangidwa ndi mafilimu opangidwa ndi AAC Plus ndi awa:
- .m4a
- .MP4
- ., M4b
- .m4V
Koma, kusiyana kotani pakati pa izi ndi mtundu wa AAC ?
Cholinga chachikulu cha HE-AAC (High-Efficiency Advanced Audio Encoding) ndi pamene audio imayenera kulembedwa bwino mwachindunji. Imodzi mwa zitsanzo zabwino kwambiri izi ndi pamene nyimbo ziyenera kuyendetsedwa pa intaneti pogwiritsa ntchito kuchuluka kwa bandwidth kotheka. Poyerekeza ndi muyezo wa AAC ndibwino kwambiri kusungira khalidwe lodziwika pang'onopang'ono pa 128 Kbps - zambiri mozungulira 48 Kbps kapena zochepa.
Mwina mungaganize kuti ndibwino kuti mukhomereni audio pamitengo yapamwamba kwambiri. Pambuyo pa zonse, sizowonjezereka pambuyo pa AAC (kapena IYE isanafike) kukupatsani lingaliro kuti ndibwino mozungulira?
N'zomvetsa chisoni kuti izi siziri choncho. Palibe mtundu uliwonse umene ungakhale wabwino pa chirichonse ndipo apa ndi pamene AAc Plus ili ndi vuto poyerekeza ndi muyezo AAC (kapena ngakhale MP3). Pamene mukufuna kusunga mtundu wa zojambula zojambulidwa pogwiritsa ntchito codec yotayika , ndiye kuti ndibwino kugwiritsa ntchito muyezo wa AAC pamene bitrate ndi ma fayilo sizomwe mukufunikira.
Kugwirizana ndi iOS ndi Android Devices
Inde, zipangizo zamakono (ngati sizinthu zonse) zomwe zimachokera ku iOS ndi Android zidzatha kusiyanitsa ma audio mu mtundu wa AAC Plus.
Mafoni a iOS apamwamba kuposa a 4, maofesi a AAC Plus amalembedwa ndi khalidwe lapamwamba. Ngati muli ndi chipangizo cha Apple chimene chiri chachikulu kuposa ichi ndiye kuti mudzatha kusewera ma fayilo, koma padzakhala kuchepetsa kukhulupirika. Izi zili choncho chifukwa gawo la SBR, lomwe liri ndi tsatanetsatane wambiri (kutembenuka), siligwiritsidwe ntchito polemba. Maofesi adzawonekeratu ngati ali ndi encoded ndi AAC-LC (Low Complexity AAC).
Nanga Bwanji Zazinthu Zamagetsi ZamaseĊµera?
Mapulogalamu a ma TV monga iTunes (vesi 9 ndi apamwamba) ndi Winamp (pro pro) amathandizira kukhomerera ndi kudodometsa AAC Plus. Ngakhale mapulogalamu ena monga VLC Media Player ndi Foobar2000 amatha kusewera ma fayilo a audio a HE-AAC.
Momwe Mpangidwe Wowonjezera Umasinthira Audio
Ma algorithm a AAC Plus (ogwiritsidwa ntchito poyendetsa ma music monga Pandora Radio), amagwiritsa ntchito luso lamakono lotchedwa Spectral Band Replication (SBR) kuti likhale ndi chidziwitso chowunikira komanso kukulitsa kupambana kwabwino. Ndondomekoyi imaphatikizapo maulendo apamwamba omwe akusoweka powasintha maulendo apansi - awa amasungidwa ku 1.5 Kbps. Mwachidziwikire, SBR imagwiritsidwanso ntchito m'mafomu ena monga MP3Pro.
Kusindikiza Audio
Pogwiritsa ntchito mapulogalamu a pulogalamu ya ma TV omwe akuthandizira AAC Plus, mautumiki a nyimbo pa Intaneti monga Pandora Radio otchulidwa kale (ndi ma intaneti ena) angagwiritse ntchito mtunduwu kuti azitha kusindikizidwa. Ndi njira yabwino yolimbiramo mafilimu yogwiritsidwa ntchito chifukwa cha zofuna zake zapansi. - Kutulutsa mauthenga makamaka pamene 32 Kbps ndizovomerezeka.