Super Audio Compact Disc (SACD) inopikisa mazai ehurukuro inoshandiswa pakuramba kwekuteerera. SACD yakatangwa muna 1999 nemakambani eWon and Philips, makambani akafanana akaunza compact disc (CD). Nzira yeSACD yakadzika haina kumbobatwa mune zvekutengesa, uye nekukura kwevanhu vanonzi MP3 uye mimhanzi ye digalog, mushamba weSACD wakaramba uri muduku.
SACDs vs. CDs
A compact disc yakanyorwa ne 16-bits yekugadzirisa pane imwe shanduro ye 44.1kHz. Vatambi veSACD uye madhishi vanobva pakurongwa kwe Direct Direct Digital (DSD), bhidhiyo ye-1-bit ine sampling rate ye 2.8224MHz, iyo inowanikwa ka 64 purogiramu yekodhikodha yakafanana. Nhamba yakakwirira yokuenzanisira inoguma muhuwandu hwemashoko ehupfumi uye kubhekwa kwekunzwa nemashoko akawanda.
Ruzhinji rwema CD ruri 20 Hz kusvika 20 kHz, zvakaenzana nekunzwa kwevanhu (kunyange zvazvo isu patinokura mararamiro edu kunoderedza vamwe). Zuva reSACD rakataridzika pane 20Hz kusvika 50 kHz.
Dynamic range yeCD ine 90 decibels (dB) (iyo yakatarwa nevanhu pano kusvika 120 dB). Nzira yakasimba yeSACD ndeye 105 dB.
SACD disks haina video yehutano, chete inzwi.
Kuedza kuwana kana vanhu vachigona kunzwa kusiyana pakati peCD neAACD zvakanyorwa, uye zvigumisiro zvinowanzoonesa kuti munhu akawandisa haagoni kutaurira musiyano pakati pezvimi zviviri. Zvigumisiro, zvisinei, hazvina kufungidzirwa zvakakwana.
Mhando dzeSADD Dhaurirano
Kune marudzi matatu e Super Audio Compact Discs: hybrid, double-layer, uye single layer.
- Hybrid discs dzine zvidimbu zviviri, nepamusoro-soro yakasarudzwa iyo inogona kutamba chete paSACD yakagadzirirwa vatambi, uye CD yakatarwa pamitambo yakafanana yeCD. Kuwedzerwa, mamwe maHydrid SACD disks ane mativi ose emuganhu we 5.1 uye stereo track. Iyo nzira yepamutambo inogona kuverengwa chete pamitambo mizhinji yeVACD.
- Rimwe sarudzo dzeSADD dzinotamba chete paSACD dzakagadzirirwa vatambi uye kwete paCD player.
- Dual-layer discs inochengetedza kaviri mimhanzi yakawanda seye imwe sarudzo asi haitamba kuCD dzevatambi uye haina kufanana.
Kubatsirwa kweSACD
Kunyange ine stereo ine mwero inogona kubatsirwa nekuwedzera kujekesa uye kutendeseka kweDVDD disks. Iyo yakakosha sampuli yezinga (2.8224MHz) inoita kuti pawedzere nguva yakawanda mhinduro, uye maSDD mabhuku anogona kukwanisa kuwedzera kutamba uye kutarisa.
Sezvo dzakawanda dzeSACD dzikaita masarudzi ehuwandu, dzichashandira paSACD uye nemavhidhiyo eCD, saka vanogona kunakidzwa pane imwe imba yemavhidhiyo, pamwe chete nemotokari kana inotakurika maitiro. Vanodhura zvishoma kudarika maCD, asi vakawanda vanofunga kuti humwe hutano hwakanaka hwakakosha mari yakakwirira.
SACD Players uye Connections
Vamwe vatambi veSACD vanoda hutano hweanalogog (kana 2 channel kana 5.1 channel) kune munhu anotambira kuti atambe hutsika hwepamusoro hweBACD nekuda kwezvidziviriro zvekudzivirira. Iko CD inogona kutambidzwa kuburikidza nekubatanidza kwe coaxial kana optical digital. Vamwe vanoita seSACD vanobvumira kushamwaridzana kumwe chete (dzimwe nguva kunonzi iLink) pakati pemuteereri uye mutevedzeri, iyo inopedza kukosha kwekubatanidzwa kweanalogog.