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<DIV><FONT face=Arial size=2>Hi Speex Developers,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm Andrey Zhukov, the developer of PI-CONSULT GMBH
company.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Building a voip application that uses your
libraries, i have found the strange problem with the latest version of Speex
Libs.</FONT></DIV>
<DIV><FONT face=Arial size=2>Our application works under win32, and i used
before version speex 1.1.12 ( were built from sources).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>It seems i have resolved the known problem with
clock drift of audio cards using the developed Windows compensation algorithm
.</FONT></DIV>
<DIV><FONT face=Arial size=2>(I use sync. call speex_echo_cancel(...).<FONT
face=Arial size=2>The remain syncronisation between in and out frames is my
own.</FONT> </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The previous 1.1.12 cancellation works moreless
well, and after appearance of new version i desided to try use it.</FONT></DIV>
<DIV><FONT face=Arial size=2>The result is:</FONT></DIV>
<DIV><FONT face=Arial size=2>In real condition case 8 from 10 times
cancellation is very unstable and starts generate a noise signal.
</FONT><FONT face=Arial size=2>I think this happens on fast learning stage
of EC algotithm.</FONT></DIV>
<DIV><FONT face=Arial size=2>When EC learning stage finished normally
(2 from 10 times ) after 2- 5 seconds cancelletion works better
than previous version.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Could you please suggest to do something to
stabilize EC in new version 1.2 beta1?</FONT></DIV>
<DIV><FONT face=Arial size=2>Do you plan release the new version in nearest
time?</FONT></DIV>
<DIV><FONT face=Arial size=2>Can i help to accelerate resolving the problem
(deep investigation, testing or something else)? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Best regards.</FONT></DIV>
<DIV><FONT face=Arial size=2>Andrey Z.</FONT></DIV></BODY></HTML>