Chipangizo Chojambulidwa ndi Super Audio (SACD) ndi mawonekedwe opangira mafilimu opangidwa ndi mafilimu opambana. SACD inayamba mu 1999 ndi makampani a Sony ndi Philips, makampani omwewo omwe adayambitsa compact disc (CD). Chipangizo cha SACD sichinayambe kugulitsidwa, komanso kukula kwa makanema a MP3 ndi nyimbo za digito, msika wa SACD wakhalabe waung'ono.
SACDs vs. CDs
Dongosolo la compact linalembedwa ndi 16-bits resolution pa mlingo wa sitirogalamu wa 44.1kHz. Masewera a SACD ndi ma disks amachokera ku processing Direct Digital (DSD), mtundu wa 1-bit wokhala ndi chiwerengero cha 2,8224MHz. Mapangidwe apamwamba a sampuli amachititsa kuyankha kwafupipafupi kwafupipafupi ndi kubereka kwawomveka mwatsatanetsatane.
Mtundu wa CD ndi 20 Hz kufika 20 kHz, mofanana ndi kumva kwa anthu (ngakhale pamene tikulezera kukula kwathu kumachepetsa ena). Zokwanira za SACD ndi 20Hz kufika 50 kHz.
Ma CD amphamvu ndi 90 decibels (dB) (mtundu wa anthu pano ndi 120 dB). Msonkhano waukulu wa SACD ndi 105 dB.
Magazini a SACD alibe vidiyo, zokhazokha.
Kuyesera kupeza ngati anthu amamva kusiyana pakati pa CD ndi SACD zojambula, ndipo zotsatira zake zimasonyeza kuti munthu wamba sangathe kusiyanitsa pakati pa mawonekedwe awiriwo. Zotsatira, komabe, sizingaganizidwe kukhala zomveka.
Mitundu ya zida za SACD
Pali mitundu itatu ya ma DVD Super Audio Compact: hybrid, awiri-layer, ndi wosanjikiza wosanjikiza.
- Ma diskriyumu ali ndi zigawo ziwiri, malo osanjikiza omwe angathe kusewera okha pa SACD omwe ali ndi osewera, komanso sewero la CD limene lidzasewera pa osewera CD. Kuonjezerapo, ma diskrid SACD ena ali ndi njira yoyendetsedwa ndi channels 5.1 komanso stereo track. Masewu ochuluka angathe kusewera pa osewera a SACD ambiri.
- Magawo osakanikirana a SACD amatha kusewera pa SACD okhawo omwe ali ndi masewera omwe sangakhale nawo pa CD.
- Magawo awiri omwe amasungira nyimbo amasungira nyimbo zambiri kawiri ngati sewero imodzi koma sangasewere pa osewera a CD ndipo sali ofala.
Zopindulitsa za SACD
Ngakhale ndondomeko yochepa ya stereo ikhoza kupindula ndi kuwonjezeka kwowonjezereka ndi kukhulupirika kwa zipangizo za SACD. Mtengo wamakono wapamwamba (2,8224MHz) umathandizira kuyankha kwafupipafupi, ndipo ma discs a SACD amatha kupanga masewera olimbitsa thupi.
Popeza magulu ambiri a SACD ndi mitundu yambiri, amawina pa SACD ndi omvera a CD, kotero amatha kusangalala nawo pakompyuta, komanso galimoto kapena zojambula. Amawononga pang'ono kuposa ma CD, koma ambiri amaganiza kuti khalidwe lawo labwino ndi lofunika kwambiri.
Otsatira SACD ndi Ma Connections
Zigawo zina za SACD zimafuna kulumikizana kwa analogi (2 njira kapena 5.1 channel) kupita kwa munthu amene amavomereza kuti awonetsere kusanjikiza kwa SACD chifukwa cha nkhani zoteteza chitetezo. Mzere wa CD ukhoza kuseweredwa kudzera kugwirizanitsi ka coaxial kapena optical digital. Zigawo zina za SACD zimalola kugwiritsira ntchito digito imodzi (nthawi zina imatchedwa iLink) pakati pa osewera ndi wolandira, zomwe zimathetsa kufunikira kwa kugwirizana kwa analoji.