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This paper describes a comprehensive study on the sound quality of the Opus codec for stereo, surround, and immersive audio formats for music and cinematic content. We conducted three listening tests on Opus encoded stereo, 5.1 and 7.1.4 channel content taken from music, cinematic, and EBU files encoded at bitrates of 32, 48, and 64 kbps per channel. Current Opus encapsulation in Ogg does not support 7.1.4 with stereo pairing. Hence, we propose a new stereo pairing schema to accommodate 7.1.4 content in Opus with joint stereo encoding. Results indicate that a bitrate of 64 kbps per channel or higher is required for transparency in stereo, but 48 kbps per channel may be sufficient for 5.1 and 7.1.4 audio formats.
Author (s): Devantier, Allan; Tejeda-Ocampo, Carlos; Zhongran Wang, Carren; Zhongran Wang, Carren; Saba, Will; Bharitkar, Sunil
Affiliation:
Samsung Research America, Valencia, California, USA; Samsung Research Tijuana, Tijuana, Baja California, Mexico
(See document for exact affiliation information.)
AES Convention: 151
Paper Number:10523
Publication Date:
2021-10-06
Import into BibTeX
Session subject:
Evaluation of spatial audio
Permalink: https://aes2.org/publications/elibrary-page/?id=21487
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Devantier, Allan; Tejeda-Ocampo, Carlos; Zhongran Wang, Carren; Zhongran Wang, Carren; Saba, Will; Bharitkar, Sunil; 2021; Bit Rate Requirements for an Audio Codec for Stereo, Surround and Immersive Formats [PDF]; Samsung Research America, Valencia, California, USA; Samsung Research Tijuana, Tijuana, Baja California, Mexico; Paper 10523; Available from: https://aes2.org/publications/elibrary-page/?id=21487
Devantier, Allan; Tejeda-Ocampo, Carlos; Zhongran Wang, Carren; Zhongran Wang, Carren; Saba, Will; Bharitkar, Sunil; Bit Rate Requirements for an Audio Codec for Stereo, Surround and Immersive Formats [PDF]; Samsung Research America, Valencia, California, USA; Samsung Research Tijuana, Tijuana, Baja California, Mexico; Paper 10523; 2021 Available: https://aes2.org/publications/elibrary-page/?id=21487
@article{devantier2021bit,
author={devantier allan and tejeda-ocampo carlos and zhongran wang carren and zhongran wang carren and saba will and bharitkar sunil},
journal={journal of the audio engineering society},
title={bit rate requirements for an audio codec for stereo, surround and immersive formats},
year={2021},
number={10523},
month={october},}
TY – paper
TI – Bit Rate Requirements for an Audio Codec for Stereo, Surround and Immersive Formats
AU – Devantier, Allan
AU – Tejeda-Ocampo, Carlos
AU – Zhongran Wang, Carren
AU – Zhongran Wang, Carren
AU – Saba, Will
AU – Bharitkar, Sunil
PY – 2021
JO – Journal of the Audio Engineering Society
VL – 10523
Y1 – October 2021