Validation of binaural recordings with head tracking for use in soundscape evaluation
Ong, Zhen Ting
Date of Issue2017
46th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2017)
School of Electrical and Electronic Engineering
Digital Signal Processing Lab
Given that sounds in real-life environments and soundscapes possess direction and distance cues, it is essential to replicate these cues in virtual reality (VR) simulations used for soundscape evaluation, to ensure that the results obtained have high ecological validity. One way to replicate the desired direction and distance cues of environmental sound sources in VR simulations is to use binaural recordings coupled with head tracking for playback, instead of regular binaural or stereo recordings. The effect of using binaural recordings coupled with head tracking in VR simulations for soundscape evaluations is thus investigated. Subjects were asked to evaluate soundscapes of in-situ locations. Subsequently, they were presented with VR reproductions of the same locations in a controlled laboratory environment. The reproductions used actual audio and video captured from the in-situ location, differing only in the type of audio used for playback. The subjects were asked to evaluate the VR soundscapes experienced using the different reproduction methods in a blind test. The validation of binaural recordings with head tracking for soundscape evaluation is based on the similarity of responses as compared to the in-situ locations, as well as the quality and immersiveness experienced by the subjects.
© 2017 German Acoustical Society (Deutsche Gesellschaft für Akustik, DEGA). This paper was published in 46th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2017) and is made available as an electronic reprint (preprint) with permission of German Acoustical Society (Deutsche Gesellschaft für Akustik, DEGA). One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.