Lee, Ben, Rudzki, Tomasz, Skoglund, Jan et al. (1 more author) (2023) Context-Based Evaluation of the Opus Audio Codec for Spatial Audio Content in Virtual Reality. Journal of the Audio Engineering Society. pp. 145-154. ISSN 0004-7554
Abstract
This paper discusses the evaluation of Opus-compressed Ambisonic audio content through listening tests conducted in a virtual reality environment.The aim of this studywas to investigate the effect that Opus compression has on the Basic Audio Quality (BAQ) of Ambisonic audio in different virtual reality contexts—gaming, music, soundscapes, and teleconferencing. The methods used to produce the test content, how the tests were conducted, the results obtained and their significance are discussed. Key findings were that in all cases, Ambisonic scenes compressed with Opus at 64 kbps/ch using Channel Mapping Family 3 garnered a median BAQ rating not significantly different than uncompressed audio. Channel Mapping Family 3 demonstrated the least variation in BAQ across evaluated contexts, although there were still some significant differences found between contexts at certain bitrates and Ambisonic orders.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | OPUS,Ambisonics,Spatial Audio,Codecs |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Electronic Engineering (York) |
Depositing User: | Pure (York) |
Date Deposited: | 25 Apr 2023 14:50 |
Last Modified: | 22 Jan 2025 00:21 |
Published Version: | https://doi.org/10.17743/jaes.2022.0068 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.17743/jaes.2022.0068 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:198462 |
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Description: Context-Based Evaluation of the Opus Audio Codec for Spatial Audio Content in Virtual Reality
Licence: CC-BY 2.5