[Speex-dev] mdf no sound issue

Tom Harper tharper at sightspeed.com
Fri Nov 11 23:19:22 PST 2005


Jean Marc,

I ran across the silence issue that results from the echo canceller
producing "bad" floating point data.  Unfortunately this hasn't been
done in a way i can reproduce, but I found that calling reset didn't
fix the silence, unless I also reset:
st->PHI[i]
st->Eh[i]
st->Yh[i]

So it may be good to add these to the reset function.

I was using these in conjunction with preprocess, so I found it necessary 
to reset:
st->echo_noise[i]
st->zeta[i]

for preprocess to work again (in addition to all of the other stuff that is 
already
initialized/could be reset in the init function)

If I find anything more about what causes the silence I'll post that.

Tom



______________________________________________

Tom Harper
Lead Software Engineer
SightSpeed - <http://www.sightspeed.com/>http://www.sightspeed.com/

918 Parker St, Suite A14
Berkeley, CA 94710

Email: tharper at sightspeed.com
Phone: 510-665-2920
Fax: 510-649-9569
My SightSpeed Video Link: http://tom.sightspeed.com
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