ʻO ka Disc Audio Compact Disc (SACD) he hōpili pūnaeweleʻikeʻia e pili ana i ka pāʻani leo leo kiʻekiʻe loa. Ua hoʻokomoʻia ka SACD i ka 1999 e nā Sony a me Philips kamupene, nā hui like i hoʻokomo i ka diskope (CD). ʻAʻoleʻikeʻia ka hōʻailona disks SACD i kaʻoihana pāʻoihana, a me ka uluʻana o nā mea kani MP3 a me nā mele kelepona,ʻo ka mākeke no ka SACD ua noho iki.
Nā SACDs vs. CD
Hoʻokomoʻia kahi diskōkā kūikawā me nā 16-bits o ka hoʻonāʻana ma ka hoʻonuiʻana o 44.1kHz. Hoʻolālā nā mea pāʻani a SACD i ke kaʻina hana Direct Stream Digital (DSD), he hōʻemi 1-bit me ka hoʻonuiʻana o ka 2.8224MHz, he 64 manawa ka lewa o kahi diski kūikawā maʻamau. ʻO ka hoʻonuiʻana o ka hoʻonuiʻana i nā hualoaʻa i ka pane pinepine lōʻihi a me ka hua'ōlelo leo me nā kiko'ī.
ʻO ke alapine o kahi CD he 20 Hz a 20 kHz, like i ka loheʻana o ke kanaka (ʻoiai e like me nā wā o ko mākou nui e ho'ēmi ana i kekahi). ʻO ke alapine frequency o SACD he 20Hz a 50 kHz.
ʻO ka nui o ke CD he 90 decibels (dB) (ke kikowaena no ke kanaka maanei a hiki i 120 dB). ʻO ka kaha o SACD he 105 dB.
ʻAʻole hoʻolale pūnaewele SACD, kahi leo wale nō.
ʻO ka ho'āʻoʻana eʻike inā hiki i nā kānaka ke lohe i kaʻokoʻa ma waena o ka CD a me ka hōʻike SACD, a hōʻikeʻia nā hopena i ka hikiʻole i ka meaʻakahi ke hoʻomaopopo i kaʻokoʻa ma waena o nā papahanaʻelua. Akā,ʻaʻole iʻikeʻia nā hopena.
Nāʻano o SACD Disks
ʻEkoluʻano o Super Audio Compact Discs: nā'ōpana, lua-papa, a me ka papa hoʻokahi.
- ʻO nā'ōpili lāpiliʻelua mau papa, kahi papaʻoihana kiʻekiʻe e hiki ke pāʻani wale nō i nā mea pāʻani SACD i hoʻolakoʻia, a me kahi kāpili CD e pāʻani ma nā pāʻani CD maʻamau. Eia kekahi,ʻo kekahi o nā'ōkule SACD o ka Hybrid he pūnaewele puni honua he 5.1 a me kahi track steoo. Hiki ke pāʻaniʻia ke ala hui lehulehu ma nā mea pāʻani SACD multichannel.
- Hoʻokahi pāʻani SACD hoʻokahi wale nō e pāʻani wale ai ma nā mea pāʻaniʻo SACD i hoʻolakoʻia aʻaʻole naʻe ma luna o nā pāʻani CD maʻamau.
- ʻO ka hale pūʻali lua-kālua i ka manawaʻelua e like me nā mele e like me kahi diski āpana hoʻokahi akāʻaʻole e pāʻani i nā mea CD aʻaʻole like.
Nā pōmaikaʻi o ka SACD
Hiki i kekahi'ōnaehana hila haʻahaʻa ke loaʻa ka pōmaikaʻi mai ka māhuahua a me ka hilinaʻi o ka SACD disks. Hoʻonui ka lākihanaʻoihana kiʻekiʻe (2.8224MHz) i ka pane pinepineʻana o kaʻaeʻana, a ua hiki i nā disikule SACD keʻoi aku kaʻoi aku o ka pāʻani kaha a me nā kiko.
No ka mea he mauʻano hoʻohālike ka nui o nā disiki SACD, e pāʻani lākou ma ka SACD a me nā pāʻani CD maʻamau, no laila e hiki iā lākou ke hoʻokipaʻia ma kahi pūnaewele loheʻole, a me ka pūnaewele pūnaewele. Ua kūʻai iki lākou ma mua o nā CD maʻamau, akā nui ka poʻe e noʻonoʻo ana i ka maikaʻi o ka kani kūpono ke kumu kūʻai kiʻekiʻe.
Nā Pūʻali a me nā Hoʻohui SACD
Pono kekahi poʻe o ka SACD e noi i kahi hulina analog (ke 2 pūnaewele a 5.1 pūnaewele) i kahi mea hōʻailona e hoʻokani i ka papahana SACD maikaʻi loa no ka pilikia o nā kope kope. Hiki ke pāʻaniʻia ke kelepili CD ma o ka hui pūnaewele coaxial a iʻole. Hiki i kekahi mau mea hana SACD keʻae i kahi pilikino pilikino (i kapaʻia kekahi manawa iLink) ma waena o ka mea pāʻani a me ka mea e loaʻa ai, kahi e hoʻopau ai i ka pono no nā mea analog.