<html><body bgcolor="#FFFFFF"><div>SipXtapi, and I believe many other SIP UAs use sip at much lower bitrate than you are -- 8kHz vs 25kHz. Quality is very good at 8khz - speech quality that is.</div><div><br></div><div> If you're trying to use speex to compress music, forget it as speex was not designed for that -- use vorbis instead. </div><div><br>On Apr 24, 2009, at 14:09, "Pandya, Julee" <<a href="mailto:julee.pandya@lmco.com">julee.pandya@lmco.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div>
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<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Hi,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">I’ve been testing out the speex narrowband codec at
low data rates (using linphone and Counterpath’s Eyebeam). I’m
finding that at data rates of ~25 kbps, the quality of the voice call is very
poor. I know speex is supposed to work at much lower data rates (~2
kbps). Has anyone verified that speex will produce reasonable quality at low
data rates? Are there any existing VoIP software clients that will
utilize speex at low data rates?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Any help is greatly appreciated!<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Thanks!<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Julee<o:p></o:p></span></font></p>
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