Mukushandiswa kwe surround sound, Dolby AC3 neDTS dzine hunhu hwekuti dzinoda maspika akawanda panguva yekutamba. Zvisinei, nekuda kwemitengo nenzvimbo, vamwe vashandisi, vakaita sevanoshandisa multimedia computer, havana maspika akakwana. Panguva ino, panodiwa tekinoroji inogona kugadzirisa masaini e multi-channel uye kuaridza mumaspika maviri akafanana, uye kuita kuti vanhu vanzwe mhedzisiro ye surround sound. Iyi i virtual surround sound technology. Zita rechirungu re virtual surround sound ndiVirtual Surround, inonziwo Simulated Surround. Vanhu vanodana tekinoroji iyi non-standard surround sound technology.

Sisitimu yekurira isingawanzo shandiswa yakavakirwa pa stereo ine nzira mbiri pasina kuwedzera ma channel nema speaker. Chiratidzo chekurira chinogadziriswa ne circuit uye chinozotepfenyurwa, kuitira kuti muteereri anzwe kuti ruzha rwunobva kumativi akasiyana-siyana uye rugadzire stereo inotevedzera. Kukosha kwekurira kwekurira kwekurira Kukosha kwetekinoroji yekurira kwekurira ndeyekushandisa ma speaker maviri kutevedzera ruzha rwekurira. Kunyangwe zvisingakwanise kuenzaniswa neimba chaiyo, mhedzisiro yacho yakanaka munzvimbo yakanakisa yekuteerera. Dambudziko rayo nderekuti kazhinji haienderane nekuteerera. Zvinodiwa panzvimbo yekurira zvakanyanya, saka kushandisa tekinoroji iyi yekurira kwekurira kwekurira kuma headphones isarudzo yakanaka.

Mumakore achangopfuura, vanhu vakatanga kudzidza nezvekushandiswa kwemachaneli mashoma uye masipika mashoma kugadzira ruzha rwemativi matatu. Ruzha urwu haruna kunyatsojeka sematekinoroji ekurira kwenzwi akadai seDOLBY. Zvisinei, nekuda kwemutengo wakaderera, tekinoroji iyi iri kushandiswa zvakanyanya muma amplifiers emagetsi, materevhizheni, odhiyo yemotokari uye AV multimedia. Iyi tekinoroji inonzi non-standard surround sound technology. Sisitimu yeruzha inotenderedza ruzha isingatenderedze yakavakirwa pa stereo yematanho maviri pasina kuwedzera machaneli nemasipika. Chiratidzo chemunda weruzha chinogadziriswa necircuit uye chobva chatepfenyurwa, kuitira kuti muteereri anzwe kuti ruzha rwunobva kumativi akasiyana uye rugadzire munda we stereo unotevedzera.

Nheyo yeVirtual Surround Sound Chinhu chikuru chekuzadzisa virtual Dolby Surround Sound kugadzirisa ruzha. Inonyanya kugadzirisa nzira dzeruzha dzinotenderedza ruzha zvichibva pamanzwiro emuviri wemunhu uye misimboti yepsychoacoustic, zvichigadzira fungidziro yekuti sosi yeruzha inotenderedza inobva kumashure kana kudivi remuteereri. Mhedzisiro yakati wandei inobva pamisimboti yekunzwa kwevanhu inoshandiswa. Binaural effect. Nyanzvi yefizikisi yekuBritain Rayleigh akawana kuburikidza nekuyedza muna 1896 kuti nzeve mbiri dzemunhu dzine musiyano wenguva (0.44-0.5 microseconds), musiyano wesimba reruzha uye musiyano wezvikamu zveruzha rwakananga kubva kunobva ruzha rumwe chete. Kunzwa kwekunzwa kwenzeve yemunhu kunogona kutsanangurwa zvichibva padiki idzi. Musiyano unogona kutsanangura divi reruzha uye kuona nzvimbo yeruzha, asi unogona kungogumira pakusarudza sosi yeruzha munzira yakatwasuka iri pamberi, uye haugone kugadzirisa nzvimbo yesosi yeruzha ine mativi matatu.

Mhedzisiro yeruzha. Auricle yemunhu inoita basa rakakosha mukuratidzwa kwemafungu eruzha uye gwara renzvimbo dzinobva ruzha. Kuburikidza nemhedzisiro iyi, nzvimbo yeruzha ine mativi matatu inogona kuzivikanwa. Mhedzisiro yekusefa frequency yenzeve yemunhu. Maitiro enzvimbo yeruzha yenzeve yemunhu ane chekuita nefrequency yeruzha. Bass ye20-200 Hz inowanikwa nephase difference, mid-range ye300-4000 Hz inowanikwa nekuchinjana kwesimba reruzha, uye treble inowanikwa nekuchinjana kwenguva. Zvichibva panheyo iyi, musiyano mumutauro nemanzwi emimhanzi muruzha runodzokororwa unogona kuongororwa, uye kurapwa kwakasiyana kunogona kushandiswa kuwedzera kunzwa kwekukomberedza. Basa rekutumira rine chekuita nemusoro. Sisitimu yekunzwa yemunhu inogadzira ma spectrum akasiyana emanzwi kubva kumativi akasiyana, uye hunhu uhwu hwe spectrum hunogona kutsanangurwa nebasa rekutumira rine chekuita nemusoro (HRT). Muchidimbu, nzvimbo yenzvimbo yenzeve yemunhu inosanganisira mativi matatu: yakatwasuka, yakatwasuka, uye yekumberi nekumashure.

Kuisa ruzha rwakatambanudzwa kunonyanya kutsamira panzeve, kuisa ruzha rwakatambanudzwa kunonyanya kutsamira pagoko renzeve, uye kuisa ruzha rwemberi nerwekumashure pamwe nekuona kwenzvimbo yeruzha rwakakomberedza kunoenderana nebasa reHRTF. Zvichibva pamhedzisiro iyi, virtual Dolby surround inogadzira mamiriro akafanana eruzha neruzha rwechokwadi rwunobva munzeve yemunhu, zvichibvumira uropi hwemunhu kugadzira mifananidzo yeruzha inoenderana nenzira inoenderana.