Ekusetshenzisweni komsindo ozungezile, kokubili i-Dolby AC3 ne-DTS zinesici sokuthi zidinga izipikha eziningi ngesikhathi sokudlala.Nokho, ngenxa yezizathu zentengo nesikhala, abanye abasebenzisi, njengabasebenzisi bekhompiyutha ye-multimedia, abanazo izipikha ezanele.Ngalesi sikhathi, kudingeka ubuchwepheshe obungakwazi ukucubungula amasiginali eziteshi eziningi futhi iwadlale ngezipikha ezimbili ezihambisanayo, futhi yenze abantu bazwe umsindo ozungezile.Lobu ubuchwepheshe bomsindo ozungezayo obubonakalayo.Igama lesiNgisi lomsindo ozungezayo obonakalayo yi-Virtual Surround, ebizwa nangokuthi I-Simulated Surround.Abantu babiza lobu buchwepheshe obungeyona i-standard surround sound technology.

Isistimu yomsindo ozungezile engajwayelekile isuselwe kusitiriyo seziteshi ezimbili ngaphandle kokwengeza amashaneli nezipikha.Isignali yenkundla yomsindo icutshungulwa yisekethe bese isakazwa, ukuze umlaleli akwazi ukuzwa ukuthi umsindo uvela ezinkomba eziningi futhi ukhiqize inkambu ye-stereo yokulingisa.Inani lomsindo ozungezayo obonakalayo Inani lobuchwepheshe bokuzungeza obubonakalayo ukusebenzisa izipikha ezimbili ukulingisa umphumela womsindo ozungezile.Nakuba ingenakuqhathaniswa netiyetha yangempela yasekhaya, umphumela ulungile endaweni engcono kakhulu yokulalela.Ububi bayo ukuthi ngokuvamile ayihambisani nokulalela.Izidingo zokuma komsindo ziphezulu, ngakho ukusebenzisa lobu buchwepheshe obuzungezile kuma-headphone kuyisinqumo esihle.

Eminyakeni yamuva nje, abantu baqale ukutadisha ukusetshenziswa kweziteshi ezimbalwa nezikhulumi ezimbalwa kakhulu ukuze bakhe umsindo wezinhlangothi ezintathu.Lo msindo ozwakalayo awuwona ongokoqobo njengobuchwepheshe bomsindo ozungezile obukhulile obufana ne-DOLBY.Kodwa-ke, ngenxa yentengo ephansi, lobu buchwepheshe busetshenziswa kakhulu kuma-amplifiers, amathelevishini, umsindo wemoto kanye ne-AV multimedia.Lobu buchwepheshe bubizwa nge-non-standard surround sound technology.Isistimu yomsindo ozungezile engajwayelekile isuselwe kusitiriyo seziteshi ezimbili ngaphandle kokwengeza amashaneli nezipikha.Isignali yenkundla yomsindo icutshungulwa yisekethe bese isakazwa, ukuze umlaleli akwazi ukuzwa ukuthi umsindo uvela ezinkomba eziningi futhi ukhiqize inkambu ye-stereo yokulingisa.

Isimiso Somsindo Osizungezile Esibonakalayo Isihluthulelo sokubona i-virtual Dolby Surround Sound ukucutshungulwa komsindo okubonakalayo.Isebenza ngokukhethekile ekucubunguleni iziteshi zomsindo ozungezayo ngokusekelwe ezimisweni ze-physiological acoustics kanye ne-psychoacoustic, idala inkohliso yokuthi umthombo womsindo ozungezile uvela ngemuva noma ohlangothini lomlaleli.Kusetshenziswa imiphumela eminingana esekelwe ezimisweni zokuzwa komuntu.Umphumela kanambambili.Isazi sefiziksi saseBrithani u-Rayleigh sathola ngokuhlolwa ngo-1896 ukuthi izindlebe ezimbili zomuntu zinokuhluka kwesikhathi (ama-microsecond angu-0.44-0.5), umehluko wokuqina komsindo kanye nokwehluka kwezigaba zemisindo eqondile evela emthonjeni womsindo ofanayo.Ukuzwela kokuzwa kwendlebe yomuntu kunganqunywa ngokusekelwe kulezi ezincane Umehluko unganquma ngokunembile isiqondiso somsindo futhi unqume indawo yomthombo womsindo, kodwa ungakhawulelwa kuphela ekunqumeni umthombo womsindo endaweni evundlile ngaphambili. , futhi ayikwazi ukuxazulula ukuma komthombo womsindo wendawo enezinhlangothi ezintathu.

Umthelela we-Auricular.I-auricle yomuntu idlala indima ebalulekile ekubonakalisweni kwamagagasi omsindo kanye nesiqondiso semithombo yomsindo yendawo.Ngalo mphumela, indawo enezinhlangothi ezintathu zomthombo womsindo inganqunywa.Imiphumela yokuhlunga imvamisa yendlebe yomuntu.Indlela yokwenziwa kwasendaweni yomsindo wendlebe yomuntu ihlobene nemvamisa yomsindo.I-bass engu-20-200 Hz itholakala ngomehluko wesigaba, ibanga elimaphakathi le-300-4000 Hz litholakala ngomehluko wokuqina komsindo, kanti i-treble itholakala ngokuhluka kwesikhathi.Ngokusekelwe kulesi simiso, umehluko olimini kanye namathoni omculo emsindweni ophindwe kabusha ungahlaziywa, futhi izindlela zokwelapha ezihlukene zingasetshenziswa ukwandisa umuzwa wokuzungezile.Umsebenzi wokudlulisa ohlobene nekhanda.Isistimu yokuzwa yomuntu ikhiqiza izilinganiso ezahlukene zemisindo esuka ezinhlotsheni ezihlukene, futhi lesi sici se-spectrum singachazwa ngomsebenzi wokudlulisa ohlobene nekhanda (HRT).Ukufingqa, ukuma kwendawo kwendlebe yomuntu kuhlanganisa izinhlangothi ezintathu: ezivundlile, eziqondile, nangaphambili nangemuva.

Ukuma okuvundlile kuncike kakhulu ezindlebeni, ukuma mpo ngokuyinhloko kuncike egobolondweni lendlebe, nokuma kwangaphambili nangemuva kanye nombono wenkundla yomsindo ozungezile kuncike kumsebenzi we-HRTF.Ngokusekelwe kule miphumela, i-virtual Dolby ezungezayo idala ngokuzenzela isimo segagasi somsindo esifanayo njengomthombo wangempela womsindo endlebeni yomuntu, okuvumela ubuchopho bomuntu ukuthi bukhiqize izithombe ezihambisanayo zomsindo endaweni ehambisanayo.