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Nowadays, widely used videoconferencing software has been diffused even further by the social distancing measures adopted during the SARS-CoV-2 pandemic. However, none of the Web-based solutions currently available support high-fidelity stereo audio streaming, which is a fundamental prerequisite for networked music applications. This is mainly because of the fact that the WebRTC RTCPeerConnection standard or Web-based audio streaming do not handle uncompressed audio formats. To overcome that limitation, an implementation of 16-bit pulse code modulation (PCM) stereo audio transmission on top of the WebRTC RTCDataChannel, leveraging Web Audio and AudioWorklets, is discussed. Results obtained with multiple configurations, browsers, and operating systems showthat the proposed approach outperforms theWebRTC RTCPeerConnection standard in terms of audio quality and latency, which in the authors` best case to date has been reduced to only 40 ms between twoMacBooks on a local area network.
Author (s): Sacchetto, Matteo; Gastaldi, Paolo; Chafe, Chris; Rottondi, Cristina; Servetti, Antonio
Affiliation:
Department of Electronics and Telecommunications, Politecnico di Torino, Italy; Department of Energy, Politecnico di Torino, Italy; Center for Computer Research in Music and Acoustic, Stanford University, CA; Department of Electronics and Telecommunications, Politecnico di Torino, Italy; Department of Control and Computer Engineering, Politecnico di Torino, Italy
(See document for exact affiliation information.)
Publication Date:
2022-11-06
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Permalink: https://aes2.org/publications/elibrary-page/?id=22017
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Sacchetto, Matteo; Gastaldi, Paolo; Chafe, Chris; Rottondi, Cristina; Servetti, Antonio; 2022; Web-Based Networked Music Performances via WebRTC: A Low-Latency PCM Audio Solution [PDF]; Department of Electronics and Telecommunications, Politecnico di Torino, Italy; Department of Energy, Politecnico di Torino, Italy; Center for Computer Research in Music and Acoustic, Stanford University, CA; Department of Electronics and Telecommunications, Politecnico di Torino, Italy; Department of Control and Computer Engineering, Politecnico di Torino, Italy; Paper ; Available from: https://aes2.org/publications/elibrary-page/?id=22017
Sacchetto, Matteo; Gastaldi, Paolo; Chafe, Chris; Rottondi, Cristina; Servetti, Antonio; Web-Based Networked Music Performances via WebRTC: A Low-Latency PCM Audio Solution [PDF]; Department of Electronics and Telecommunications, Politecnico di Torino, Italy; Department of Energy, Politecnico di Torino, Italy; Center for Computer Research in Music and Acoustic, Stanford University, CA; Department of Electronics and Telecommunications, Politecnico di Torino, Italy; Department of Control and Computer Engineering, Politecnico di Torino, Italy; Paper ; 2022 Available: https://aes2.org/publications/elibrary-page/?id=22017
@article{sacchetto2022web-based,
author={sacchetto matteo and gastaldi paolo and chafe chris and rottondi cristina and servetti antonio},
journal={journal of the audio engineering society},
title={web-based networked music performances via webrtc: a low-latency pcm audio solution},
year={2022},
volume={70},
issue={11},
pages={926-937},
month={november},}
TY – paper
TI – Web-Based Networked Music Performances via WebRTC: A Low-Latency PCM Audio Solution
SP – 926 EP – 937
AU – Sacchetto, Matteo
AU – Gastaldi, Paolo
AU – Chafe, Chris
AU – Rottondi, Cristina
AU – Servetti, Antonio
PY – 2022
JO – Journal of the Audio Engineering Society
VO – 70
IS – 11
Y1 – November 2022