Requirements for an Internet Audio Codec
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: RFC Editor <firstname.lastname@example.org>, codec mailing list <email@example.com>, codec chair <firstname.lastname@example.org> Subject: Document Action: 'Requirements for an Internet Audio Codec' to Informational RFC (draft-ietf-codec-requirements-05.txt) The IESG has approved the following document: - 'Requirements for an Internet Audio Codec' (draft-ietf-codec-requirements-05.txt) as an Informational RFC This document is the product of the Internet Wideband Audio Codec Working Group. The IESG contact persons are Robert Sparks and Gonzalo Camarillo. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-codec-requirements/
Technical Summary This document provides requirements for an audio codec designed specifically for use over the Internet. The requirements attempt to address the needs of the most common Internet interactive audio transmission applications and to ensure good quality when operating in conditions that are typical for the Internet. These requirements address the quality, sampling rate, delay, bit-rate, and packet loss robustness. Other desirable codec properties are considered as well. Working Group Summary The document was the subject of much discussion, as the work of the CODEC working group in general is contentious. The bulk of the controversy has been around requirements around which codecs need to be "beaten" by this one, which are summarized in section 5.2. Much of the debate was around whether comparisons should be done to encumbered codecs, or just other codecs which are currently believed to be unencumbered. There was only weak consensus on these points, with dissenters. The chairs elected to move forward with the document with the best view on consensus that could be achieved. There has also been a lot of discussion around what exactly needs to be tested, and it was agreed for detailed test plans to be out of scope for this document. Earlier on in the lifecycle of this document, there were numerous questions on requirements that were discussed, but little consensus around most of them, leading to relatively little change in the document based on the discussion. During the WGLC period, the chairs asked vocal group members to be very clear on what issues remained. Written comments were provided and addressed point-by-point to the satisfaction of the chairs. Document Quality This document does not specify a protocol and therefore there are no implementations. However it has been looked at, and commented on, by numerous experts in voice coding. As such, we believe that the document represents a set of requirements which are appropriate and comprehensive. Personnel Jonathan Rosenberg is the document shepherd. Robert Sparks is the responsible area director.