Sound in virtual reality

Percepcija 3D zvuka koji pridonosi osjećaju prividne stvarnosti se temelji na tome da što bolje proučimo kako ljudski mozak percipira podražaje u realnom svijetu i stvara sliku u položaju objekata u prostoru te da zatim implementiramo naučene modele. Percepcija smjera iz kojeg dolazi zvuk se ostvaruje pomoću interauralne razlike vremena i intenziteta zvuka koji dolazi do slušatelja. Tome još pridonose pomicanje glave i kompleksna struktura uške koja deformira zvuk koji dolazi do uha i otklanja možebitne dvojbe oko toga da li je zvuk iza ili ispred slušatelja. Za percepciju udaljenosti zvuka najbitnije su značajke glasnoće i reverberacije. Glasnoća, kao značajka udaljenosti, pokazuje da što je neki izvor glasniji za slušatelja da je to njegova lokacija bliža. Reverberacija, osim što pomaže u evaluaciji udaljenosti, je najznačajnija što daje dojam veličine konteksta okoline.The perception of 3D sound that contributes to the feeling of virutal reality is based on the fact that the should first study how the human brain perceives stimuli in the real world and creates an image of the object positions in space and then implement the learned models. The perception of the direction from which the sound comes is achieved by the interaural difference between the time and intensity of the sound coming to the listener. Other factors that contributes are the movement of the head and the complex structure of the pinnae that deforms the sound that comes to the ear and eliminates possible doubts about whether the sound is behind or in front of the listener. For the perception of the distance of sound, the most important cues are volume and reverberation. Volume, as a distance cue, shows that if some source is louder for the listener than its location is closer. Reverberation, apart from helping distance evaluation, is the most significant cue that gives an impression of the size of the environment context