Re: [codec] I-D Action: draft-ietf-codec-opus-11.txt
Jean-Marc Valin <jmvalin@mozilla.com> Fri, 17 February 2012 21:35 UTC
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Date: Fri, 17 Feb 2012 16:35:36 -0500
From: Jean-Marc Valin <jmvalin@mozilla.com>
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Subject: Re: [codec] I-D Action: draft-ietf-codec-opus-11.txt
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Hi, We just uploaded version -11 of the draft to address the comments made during the second WGLC and during the Taipei meeting. The list of changes is below: - Fix for noise floor tracking as discussed in last meeting (see issue #1) - Limit LPC prediction gain as discussed in last meeting (see issue #2) - Fix LPC/LTP state rescaling as discussed in last meeting (see issue #3) - Resampler simplification as discussed in last meeting (see issue #4) - Making it easier for an alternate implementation to pass the conformance test as discussed in last meeting - Editorial/spelling fixes received - Minor code improvements to facilitate further testing and creation of better test vectors - Addressed some comments about variables using names reserved by POSIX (_ prefix) or some ADI compilers (bank) - Fixes for optional "self-delimited packing" On 17/02/12 04:25 PM, internet-drafts@ietf.org wrote: > > A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Internet Wideband Audio Codec Working Group of the IETF. > > Title : Definition of the Opus Audio Codec > Author(s) : Jean-Marc Valin > Koen Vos > Timothy B. Terriberry > Filename : draft-ietf-codec-opus-11.txt > Pages : 324 > Date : 2012-02-17 > > 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. > > > A URL for this Internet-Draft is: > http://www.ietf.org/internet-drafts/draft-ietf-codec-opus-11.txt > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > This Internet-Draft can be retrieved at: > ftp://ftp.ietf.org/internet-drafts/draft-ietf-codec-opus-11.txt > > _______________________________________________ > codec mailing list > codec@ietf.org > https://www.ietf.org/mailman/listinfo/codec
- [codec] I-D Action: draft-ietf-codec-opus-11.txt internet-drafts
- Re: [codec] I-D Action: draft-ietf-codec-opus-11.… Jean-Marc Valin