Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105858
Title: Influence of parametrically-decoded First-order ambisonics reproduction in cinematic virtual-reality-based soundscape evaluation
Authors: Lam, Bhan
Hong, Jooyoung
Ong, Zhen Ting
Gan, Woon-Seng
Kang, Jian
Feng, Jing
Tan, Sze-Tiong
Keywords: Soundscape
Spatial Audio
Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Lam, B., Hong, J., Ong, Z.-T., Gan, W.-S., Kang, J., Feng, J., & Tan, S.-T. (2019). Influence of parametrically-decoded First-order ambisonics reproduction in cinematic virtual-reality-based soundscape evaluation. 48th International Congress and Exhibition on Noise Control Engineering (INTER-NOISE 2019).
Abstract: Increasing consumer availability of first-order ambisonics (FOA) microphones have enabled virtual evaluations of soundscapes with head-tracked binaural playback through headphones. Known issues with FOA binaural decoding techniques, such as timbral and spatial artefacts, however, have marred its advantages. Parametric decoding methods, such as directional audio coding (dirAC), high angular resolution plane-wave expansion (HARPEX), and the recently proposed coding and multidirectional parameterization of ambisonic sound scenes (COMPASS) have noted significant improvements in sound quality over time-invariant linear processing of FOA. Whereas subjective assessments of the parametric methods have been traditionally focused on musical media, few studies have focused on the evaluation of outdoor acoustic scenes. Hence, the differences between parametrically and linearly decoded FOA to head-tracked binaural is explored here through subjective assessments of outdoor acoustic scenes. Participants evaluated the perceived spatial sound quality and the soundscape quality of four reproduced outdoor scenes in cinematic virtual reality through a head-mounted device. The spatial quality was evaluated based on bipolar attributes related to the overall impression and impression of the acoustic environment during head movement. The results show that the evaluation of soundscape quality was independent of the reproduction methods. However, a notable improvement in the perceived spatial quality was observed in the parametric reproductions in terms of directionality and distinctiveness of sound sources.
URI: https://hdl.handle.net/10356/105858
http://hdl.handle.net/10220/49570
Rights: © 2019 German Acoustical Society. All rights reserved. This paper was published in 48th International Congress and Exhibition on Noise Control Engineering (INTER-NOISE 2019) and is made available with permission of German Acoustical Society.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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