On 5 October 2011 13:25, Phillip Hallam-Baker <hallam(_at_)gmail(_dot_)com>
wrote:
Taken in combination, I cannot imagine any reason to use any audio
codec other than MP3 or AC2 (or some other similar legacy scheme) once
we can be assured that the corresponding patents have expired.
I'm not familiar with AC2, but if you mean traditional audio codecs
like MP3, AC3, and Vorbis, these all have a high encoding (and
decoding) latency which makes them unsuitable for interactive
applications.
Addressing that, as much as the (almost 4-fold!) bandwidth reduction
over legacy codecs, is what we're trying achieve with this working
group. This is reflected in the requirements document published as RFC
6366 where low coding latency is a primary attribute of each use case.
That doesn't have much to do with your comments on the other IPR
issues, but I hope it explains why we can't just use mp3.
Separately, mp3 is in fact still covered by patents, at least
according to wikipedia[2], so that is not an IPR free solution for
some years yet, even if it were technically suitable.
-r
[1] http://tools.ietf.org/html/rfc6366
[2] http://en.wikipedia.org/wiki/MP3#Licensing_and_patent_issues
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