Ekuphunyezweni kwesandi esijikelezileyo, zombini i-Dolby AC3 kunye ne-DTS zinempawu ezifuna izithethi ezininzi ngexesha lokudlala.Nangona kunjalo, ngenxa yezizathu zexabiso kunye nendawo, abanye abasebenzisi, njengabasebenzisi bekhompyuter yemultimedia, abanazo izithethi ezaneleyo.Ngeli xesha, itekhnoloji iyafuneka enokuthi isebenze imiqondiso emininzi kwaye idlale kwakhona kwizithethi ezibini ezihambelanayo, kwaye yenza abantu bazive isiphumo sesandi esingqongileyo.Le yitekhnoloji yesandi esisingqongileyo.Igama lesiNgesi lesandi esijikelezileyo esibonakalayo yi-Virtual Surround, ekwabizwa ngokuba yiSingqinisiso esiLingeneyo.Abantu bathi obu buchwephesha obungeyo-standard surround sound technology.

Isixokelelwano sesandi esisingqongileyo esingesiso esiqhelekileyo sisekelwe kwi-stereo yamajelo amabini ngaphandle kokongeza amajelo kunye nezithethi.Isignali yentsimi yesandi icutshungulwa yisekethe kwaye emva koko isasazwe, ukwenzela ukuba umphulaphuli unokuziva ukuba isandi sivela kwiindlela ezininzi kwaye sivelise intsimi ye-stereo efanisiweyo.Ixabiso lesandi esirhangqileyo esibonakalayo Ixabiso letekhnoloji yenyani engqongileyo kukusebenzisa izithethi ezibini ukulinganisa isiphumo sesandi esingqongileyo.Nangona ingenakuthelekiswa nethiyetha yasekhaya yokwenyani, isiphumo silungile kwindawo yokuphulaphula ingcono.Ububi bayo kukuba ayihambelani ngokubanzi nokuphulaphula.Iimfuno zokuma kwesandi ziphezulu, ke ngoko ukusebenzisa le teknoloji ijikelezileyo kwii-headphones lukhetho oluhle.

Kwiminyaka yakutshanje, abantu baye baqala ukufunda ukusetyenziswa kweendlela ezimbalwa kunye nezithethi ezimbalwa ukudala isandi esine-dimensional.Esi siphumo sesandi asiyonyani njengetekhnoloji yesandi esingqongileyo esivuthiweyo njenge-DOLBY.Nangona kunjalo, ngenxa yexabiso eliphantsi, obu buchwephesha busetyenziswa ngakumbi kwi-amplifiers yamandla, oomabonakude, iaudio yemoto kunye ne-AV multimedia.Le teknoloji ibizwa ngokuba yi-non-standard surround sound technology.Isixokelelwano sesandi esisingqongileyo esingesiso esiqhelekileyo sisekelwe kwi-stereo yamajelo amabini ngaphandle kokongeza amajelo kunye nezithethi.Isignali yentsimi yesandi icutshungulwa yisekethe kwaye emva koko isasazwe, ukwenzela ukuba umphulaphuli unokuziva ukuba isandi sivela kwiindlela ezininzi kwaye sivelise intsimi ye-stereo efanisiweyo.

Umgaqo weSandi esisiQongileyo esisiQhingayo Isitshixo ekuqondeni isandi se-Dolby esijikelezayo esinenyani kukusetyenzwa kwesandi.Isebenza ngokukhethekileyo kwiitshaneli zesandi ezijikelezileyo ezisekwe kwi-acoustics ye-physiological acoustics kunye nemigaqo ye-psychoacoustic, idala inkohliso yokuba umthombo wesandi esijikelezileyo uvela ngasemva okanye kwicala lomphulaphuli.Imiphumo emininzi esekelwe kwimigaqo yokuva kwabantu isetyenziswa.Isiphumo seBinaural.Isazi sefiziksi saseBrithani uRayleigh wafumanisa ngokusebenzisa iimvavanyo kwi-1896 ukuba iindlebe ezimbini zomntu zineeyantlukwano zexesha (i-0.44-0.5 microseconds), ukungafani kwesandi kunye nokwahlukana kwesigaba kwizandi ezithe ngqo ezivela kumthombo ofanayo wesandi.Uvakalelo lokuva lwendlebe yomntu lunokumiselwa ngokusekelwe kwezi zincinci Umahluko unokumisela ngokuchanekileyo ulwalathiso lwesandi kwaye unqume indawo yomthombo wesandi, kodwa unokulinganiselwa kuphela ekumiseleni umthombo wesandi kwicala elithe tye ngaphambili. , kwaye ayikwazi ukusombulula indawo yomthombo wesandi sesithuba esinemilinganiselo emithathu.

Isiphumo se-Auricular.I-auricle yomntu idlala indima ebalulekileyo ekubonakalisweni kwamaza omsindo kunye nolwalathiso lwemithombo yesandi sesithuba.Ngale mpembelelo, indawo ene-dimensional emithathu yomthombo wesandi inokumiselwa.Iziphumo zokuhluzwa rhoqo kwendlebe yomntu.Isixhobo sokwenza isandi sendlebe yomntu sinxulumene nokuphindaphinda kwesandi.I-bass ye-20-200 Hz ibekwe ngokwahluka kwesigaba, i-middle-range ye-300-4000 Hz ibekwe ngumahluko we-sound intensity, kwaye i-treble ifumaneka ngokwahluka kwexesha.Ngokusekelwe kulo mgaqo, ukungafani kolwimi kunye neetoni zomculo kwisandi esiphindaphindiweyo kunokuhlalutywa, kwaye unyango oluhlukeneyo lunokusetyenziswa ukunyusa ingqiqo yokujikeleza.Umsebenzi wodluliselo olunxulumene nentloko.Inkqubo yokuva umntu ivelisa ii-spectrums ezahlukeneyo zezandi ezivela kumacala ahlukeneyo, kwaye olu phawu lwe-spectrum lunokuchazwa ngumsebenzi onxulumene nentloko (HRT).Ukushwankathela, ukuma kwendawo yendlebe yomntu kubandakanya amacala amathathu: ethe tye, ethe nkqo, nangaphambili nasemva.

Ukuma okuthe tye ikakhulu kuxhomekeke ezindlebeni, ukuma ngokuthe nkqo kuxhomekeke ikakhulu kwiqokobhe lendlebe, kunye nokuma okungaphambili nangasemva kunye nombono webala lesandi elijikelezileyo lixhomekeke kumsebenzi we-HRTF.Ngokusekwe kwezi ziphumo, i-Dolby ebonakalayo ejikelezileyo idala isandi esifana neso sandi njengomthombo wesandi endlebeni yomntu, ivumela ingqondo yomntu ukuba ivelise isandi esihambelanayo nemifanekiso kwindawo ehambelana nayo.