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Essentially, the thing that's been holding up 1.2 was the AEC and
preprocessor. The codec itself is pretty stable and I do not really see
more work happening on it. As for the AEC and preprocessor, these are
really open-ended project and I lack sufficient time to take care of
them.<br>
<br>
Jean-Marc<br>
<br>
On 10-11-12 03:27 AM, Ken Smith wrote:
<blockquote
cite="mid:AANLkTik_kVXjiCt3A7MrzPGc=jkqG6qcax4=PX0nqYWK@mail.gmail.com"
type="cite">Basically, Speex is the brain child of Jean-Marc Valin,
and from what I can tell, he has since moved on to other projects,
though he continues to monitor this list. So no, it's not really being
developed anymore. And what's out there really is good enough for a
great many applications.
<div><br>
</div>
<div>That said, there remains room for improvement, mostly in the
pre-processor (the codec itself is very mature). To take a few known
issues: </div>
<div><br>
</div>
<div>(1) The main codec doesn't have full fixed point support for all
of its modes. </div>
<div>(2) The acoustic echo cancellation, in my experience, gives you
real but far from perfect echo cancellation. (And a lot of theoretical
work has been done in that area since Valin coded it up in 2005.)</div>
<div>(3) The VAD for the pre-processor needs to be rewritten. (The
comments in the code describe it as a "kludge".) </div>
<div>(4) I've found that the AGC in the preprocessor can act rather
strangely at times.</div>
<div>(5) The AGC in the pre-processor doesn't have fixed-point
support.</div>
<div>(6) There are Java (JSpeex) and C# (CSpeex) ports, but they only
implement the codec, not the pre-processor, jitter buffer, AEC, or any
of the other parts of the Speex library. It would be great if someone
were to port the remainder of the Speex library over to those
environments.</div>
<div><br>
</div>
<div>I'm not really qualified to take on these jobs myself, but it
would be great if someone else with the right background who wanted to
make a name for themselves in this field was able to pick up where
Valin left off. (To be clear: we're all very much in his debt.)<br
clear="all">
<br>
Ken Smith<br>
Cell: 425-443-2359<br>
Email: <a moz-do-not-send="true" href="mailto:ken@alanta.com"
target="_blank">ken@alanta.com</a><br>
Blog: <a moz-do-not-send="true"
href="http://blog.wouldbetheologian.com/" target="_blank">http://blog.wouldbetheologian.com/</a><br>
<br>
<br>
<div class="gmail_quote">On Thu, Nov 11, 2010 at 11:02 PM, James
Mbuthia <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jmmbuthia@gmail.com">jmmbuthia@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,
<div><br>
</div>
<div>Just wanted to know, is speex still being developed? I was
going through the manual and its dated December 2007 for speex version
1.2 beta 3. As far as I can see there doesnt seem to be any new
versions since then, is there any development work on speex?</div>
<div><br>
</div>
<div>regards,</div>
<div>James</div>
<br>
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<br>
</blockquote>
</div>
<br>
</div>
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</blockquote>
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