Eʻoi aku ka maikaʻi o ka hōʻike o ka AAC i nā mea a pau?
Hiki paha iāʻoe ke manaʻo he kuleanaʻo Apple no ka hoʻomohalaʻana i ka papa hana AAC Plus (i kapaʻia kekahi manawaʻo AAC +). Akā, heʻoiaʻiʻo, he inoa kālepa i hoʻohanaʻia e Coding Technologies no ko lākou hoʻopihapiha hōʻoluʻolu HE-AAC V1. Ināʻoe e noʻonoʻo ana i keʻano o ka inoa o ka inoa o ia, a laila, ua pōkole no ka Pono Hana . ʻO ka meaʻoiaʻiʻo,ʻo ka AAC Plus i kapaʻia he HE-AAC ma mua o ka hoʻohanaʻana i ka inoa nui a + paha.
ʻO nā'īnae kōnae pūnaewele pili pū me AAC Plus, penei:
- .m4a
- .MP4
- ., M4b
- .m4V
Akā, he aha kaʻokoʻa ma waena o kēia a me ka hōʻuluʻulu AAC maʻamau ?
ʻO ka kumu nuiʻo HE-AAC (High-Efficiency Advanced Audio Encoding) kahi e pono ai ke hoʻololi i nā leo i nā haʻawina haʻahaʻa haʻahaʻa. ʻO kekahi o nā hōʻailona maikaʻi loa o kēia ka wā e pono ai ke kahakahaʻia nā mele ma luna o ka Pūnaewele me ka hoʻohanaʻana i kahi liʻiliʻi o ka bandwidth. Hoʻohālikelikeʻia i kaʻaha AAC iʻoi aku ka maikaʻi ma ka mālamaʻana i ka maikaʻi iʻikeʻia ma nā lihi liʻiliʻi ma lalo o 128 Kbps -ʻoi aku ma kahi o 48 Kbps a iʻole liʻiliʻi.
Hiki paha iāʻoe ke manaʻo heʻoi aku ka maikaʻi ma ka hoʻololiʻana i nā leo i nā kiʻekiʻe kiʻekiʻe. Ma hope o nā mea a pau,ʻaʻole hiki i ke keu aku ma hope o ka AAC (aiʻole ia ma mua o ia mea) ke hāʻawi iāʻoe i keʻano eʻoi aku ka maikaʻi a puni?
I loko o ke kaumaha,ʻaʻole kēia ka hihia. ʻAʻohe puka i hiki ke maikaʻi ma nā mea āpau a ma laila kahi i hoʻonāʻia ai ka AAc Plus ke hoʻohālikeʻia me ka AAC (aiʻoleʻo MP3) paha. Inā makemakeʻoe e mālama i ka maikaʻi o ka leo leo e hoʻohana ana i kahi codec paʻakikī , eʻoi aku ka maikaʻi o ka hoʻohanaʻana i ka'AAC AAC i ka wā e hoʻohālike ai i ka nui a me ka hoʻoiliʻana i nā nuiʻaʻoleʻo kāu kumu nui.
ʻO ke kūlike me nā polokalamu iOS a me nā polokalamu uila
ʻAe,ʻo ka hapanui (ināʻaʻole nā mea) nā pūnaewele holonaewele e pili ana ma o iOS a me Android hiki iā lākou ke hoʻohemo i nā leo ma ka hōʻali AAC Plus.
No nā'ōnaehana iOSʻoi aku ka kiʻekiʻe ma mua o ka'ōnaehana 4, ua hoʻopiʻiʻia nā'ōnaehana AAC Plus me ka palena kiʻekiʻe loa. Inā he polokalamu Apple kāu iʻoi aku ma mua o kēia a laila hiki iāʻoe ke hoʻopaʻi i kēia mau faila, akā, e emi ana ka pono. ʻO kēia no ka meaʻaʻole i hoʻohanaʻia ka māhele SBR, kahi i loaʻa ai nāʻikepili kiʻekiʻe (treble),ʻaʻole hoʻohanaʻia i ka hoʻololiʻana. E mālamaʻia nā'ōnaehana me he mea lā ua hoʻopiliʻia iā lākou me ka AAC-LC (Low Complexity AAC).
Pehea e pili i nā polokalamu Media Media?
ʻO nā polokalamu pāʻoihana pūnaewele like iTunes (version 9 aʻoi aʻe) a me Winamp (pro version) e kākoʻo i ka hoʻopā'ālua a me ka hoʻololiʻana o AAC Plus. ʻOiai nā polokalamu'ē aʻe e like me VLC Media Player a me Foobar2000 hiki iāʻoe ke pāʻani i nā leo lohe leo HE-AAC.
Pehea e hoʻonui ai ka Hōʻona i Audio
ʻO ka AAC Plus algorithm (hoʻohanaʻia e nā mele mele e like me ka Pandora Radio), hoʻohana i kahiʻenehana i kapaʻiaʻo Spectral Band Replication (SBR) e hoʻonui i ke kaʻina o ka leo ma ka hoʻonuiʻana i ka hoʻokō pono. ʻO kēia pūnaewele e hoʻopili pono ana i nā alapine kiʻekiʻe ma o ka transposing i nā alapine haʻahaʻa - e mālamaʻia kēia ma 1.5 Kbps. ʻOiai, ua hoʻohanaʻiaʻo SBR i nāʻano likeʻole me MP3Pro.
Kaheʻana Audio
Me nā polokalamu pūnaewele pūnaewele e kākoʻo ana iā AAC Plus, nā lawelawe mele pūnaewele e like me ka Radio Pandora i haʻi muaʻia (a me nā lawelawe leka uila pūnaewele) e hoʻohana i kēiaʻano no ka hoʻoukaʻana i nā mea. He pāʻani hoʻokani leo maikaʻi loa ia e hoʻohana ai no kona mau koi liʻiliʻi haʻahaʻa - no ka hoʻolahaʻana i nā'ōlelo i kahi kahi hiki ke hele i kahi haʻahaʻa he 32 Kbps.