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Convention Paper

Voice Coding with Opus

Authors: Vos, Koen; Sørensen, Karsten Vandborg; Jensen, Søren Skak; Valin, Jean-Marc

AES Convention 135 · Paper 8941 · October 2013

Abstract

In this paper we describe the voice mode of the Opus speech and audio codec. As only the decoder is standardized, the details in this paper will help anyone who wants to modify the encoder or gain a better understanding of the codec. We go through the main components that constitute the voice part of the codec, provide an overview, give insights, and discuss the design decisions made during the development. Tests have shown that Opus quality is comparable to or better than several state-of-the-art voice codecs, while covering a much broader application area than competing codecs.

Details

Published in
AES Convention 135
AES Convention
135
Paper number
8941
Publication date
October 6, 2013
Session subject
Signal Processing
Affiliation
vocTone, San Francisco, CA, USA; Microsoft, Stockholm, Sweden; GN Netcom A/S, Ballerup, Denmark; Mozilla Corporation, Mountain View, CA, USA (See document for exact affiliation information.)
Type
Convention Paper