[vorbis-dev] cascading Ogg Vorbis encoded audio
ciarana at 6809.eclipse.co.uk
Fri Sep 20 00:28:21 PDT 2002
Rob Burke wrote:
> By cascading, I meant the following:
> 16 bit/44.1/PCM -> Vorbis 160 kbps -> Vorbis 128 kbps -> (insert codec
> of choice) and so on, perhaps up to 20 different encode stages. [...]
> But the end goal remains to try and figure out a universal way to make
> audio codecs less prone to aural artifacts due to multiple encoding
> generations without adding any overhead.
You might be interested in the work of the BBC, et al producing the
ATLANTIC MOLE. I don't know how specific to MPEG the work was, but
they tackled this problem (and the similar one of video degradation from
multiple encode steps) a long time ago...
(NB: I also have no idea whether patents, etc. are involved here. It
might turn out to be completely useless due to them...)
Ciaran Anscomb, Perl/C Hacker
No disclaimer? http://www.goldmark.org/jeff/stupid-disclaimers/
Be safe -- Be suspicious. Regret nothing -- Report everything.
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