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Računalniška tvorba 3D zvoka v virtualnih prostorihŽiberna, Gorazd, 1952- ; Zazula, DamjanV članku opisujemo pristope, s katerimi lahko računalniško tvorimo zvoke, ki jih slišimo kot prostorske, torej prihajajoče iz določene smeri in z določene oddaljenosti. Pri takšnem zaznavanju v ... realnosti odigra pomembno vlogo t. i. impulzni odziv glave, ki združuje vpliv uhljev in oblike glave. Računalniško tvorimo umetne zvoke tako, da te vplive že vsebujejo, zato jih je treba poslušati s slušalkami. Tako lahko simuliramo poslušanje zvočnega izvira na odprtem ali pa v zaprtem prostoru, ki ima določene dimenzije ter odbojne lastnosti sten in stropa. V obeh primerih obravnavamo situaciji, ko izvir in poslušalec mirujeta in ko se izvir giblje glede na mirujočega poslušalca. Pri tem smo uporabili standardizirane impulzne odzive človeške glave, ki so nam jih odstopili na univerzi Wisconsin-Madison v ZDA. Umetne 3D zvočne signale smo predvajali naključno izbranim poskusnim osebam. Ugotavljati so morale, iz katere smeri slišijo predvajane zvoke ali v kateri smeri se zvočilo giblje. Njihovi odgovori kažejo na prostorsko ločljivost ušesa med 5° in 10°. Poskusne osebe so tudi teže ločevale med smerema levo-spredaj in levo-zadaj. Prav tako jim je delalo težave gibanje zvočila pred njimi, torej spredaj, ki so ga zamenjevale z gibanjem zadaj.Source: Elektrotehniški vestnik. - ISSN 0013-5852 (Letn. 70, št. 3, 2003, str. 96-102)Type of material - article, component partPublish date - 2003Language - slovenianCOBISS.SI-ID - 8101910
Author
Žiberna, Gorazd, 1952- |
Zazula, Damjan
Topics
signali |
identifikacija |
akustika |
zvok |
impulzni odziv
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Database name | Field | Year |
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Žiberna, Gorazd, 1952- | |
Zazula, Damjan | 08061 |
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