The IESG has received a request from the Internet Wideband Audio Codec WG (codec) to consider the following document: - 'Definition of the Opus Audio Codec' <draft-ietf-codec-opus-12.txt> as a Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2012-05-10. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document defines the Opus interactive speech and audio codec. Opus is designed to handle a wide range of interactive audio applications, including Voice over IP, videoconferencing, in-game chat, and even live, distributed music performances. It scales from low bitrate narrowband speech at 6 kb/s to very high quality stereo music at 510 kb/s. Opus uses both linear prediction (LP) and the Modified Discrete Cosine Transform (MDCT) to achieve good compression of both speech and music. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-codec-opus/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-codec-opus/ballot/ The following IPR Declarations may be related to this I-D: http://datatracker.ietf.org/ipr/1712/ http://datatracker.ietf.org/ipr/1602/ http://datatracker.ietf.org/ipr/1445/ http://datatracker.ietf.org/ipr/1446/ http://datatracker.ietf.org/ipr/1447/ http://datatracker.ietf.org/ipr/1741/ http://datatracker.ietf.org/ipr/1670/ http://datatracker.ietf.org/ipr/1520/ http://datatracker.ietf.org/ipr/1524/ http://datatracker.ietf.org/ipr/1525/ http://datatracker.ietf.org/ipr/1526/
