[Speex-dev] fixed-point version

[Jean-Marc Valin]

> I'm interested in helping on the fixed-point version of Speex.  If there is
> anyone currently directing this work, would they please contact me and let
> me know how I can help.

Sure, one short term thing that's on the TODO list is to fix the
following bug. The idea is to check where the overflow happens.

	Jean-Marc


> Hi.
> 
> Problem occured only when I encoded using FIXED_POINT.
> Decoder type doesn't matter (at last in this example).
> 
> 
> 
> Jean-Marc Valin wrote:
> 
> >Hi,
> >
> >Please, could you check what happens if you encode with fixed and
> decode
> >with float and vice versa?
> >
> >       Jean-Marc
> >
> >On ven, 2004-09-24 at 13:51 +0200, Tomasz Pyra wrote:
> >  
> >
> >>Please compare samples:
> >>
> >>http://www.ivo.pl/ivo2/sound/krwawa_org.wav
> >>http://www.ivo.pl/ivo2/sound/krwawa_fixed.wav
> >>http://www.ivo.pl/ivo2/sound/krwawa_float.wav
> >>
> >>krwawa_org.wav is original file.
> >>Both output files was created using same program by compressing from
> wav 
> >>to speex, then decompressing from speex to wav (using
> speex_encode_int 
> >>and speex_decode_int).
> >>
> >>Only difference was used speex library.
> >>krwawa_fixed.wav was created by libspeex compiled with defined
> FIXED_POINT
> >>krwawa_float.wav was created without FIXED_POINT.
> >>
> >>When samples values do not exceed (-32000;32000) eveything is ok.
> >>Testing platform was Pocket PC, with ARM cpu, libspeex compiled in
> MsEVC++4.
> >>

-- 
Jean-Marc Valin <Jean-Marc.Valin at USherbrooke.ca>
Université de Sherbrooke
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