[speex-dev] Chopping off the wideband?

Jean-Marc Valin jean-marc.valin at hermes.usherb.ca
Tue Feb 18 18:06:16 PST 2003

BTW, when you have something working and stable, I could include it in
the main Speex distribution.


Le mar 18/02/2003 à 20:57, Bernard Blackham a écrit :
> On Tue, Feb 18, 2003 at 06:09:43PM -0500, Jean-Marc Valin wrote:
> > Le mar 18/02/2003 ? 17:38, John Hayes a ?crit :
> > > If I encode something in ultra-wideband, can I decode it in wideband by
> > > chopping off bytes in every frame?
> > 
> > All you have to do is use the --force-wb switch with speexdec. It will
> > decode as if the file were wideband, ignoring the ultra-wideband info.
> > It would also be possible to write a tool that strips off those bytes
> > from the file itself (making it a bit smaller) but such a tool hasn't
> > been written yet.
> I have a very hacky tool called speexcat, designed to cut and stitch
> speex files together, and modify things like author/title tags
> without the need for decoding/re-encoding. If I were to polish it up
> a little (a lot), and maybe implement the ultra-wideband -> wideband
> stripping, would anybody honestly use it? If so, I'd be happy to do
> so.
> Regards,
> Bernard.

Jean-Marc Valin, M.Sc.A.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

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