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Thank you for the information on the denoiser. Testecho helped me
tremedously (I am using VS2005 and it wasn't in the proj files so I
missed it) in prompting me to add recording hooks in and around my flow
graph resource. I found that my speaker output was delaying the audio
210-225ms, so it was long out of the 100ms window. I added a queue for
the speaker data to delay its use for 210ms and my problem has been
solved. I was able to shorten the filter length to 50 ms to provide
much faster training. <br>
<br>
I had fully read the echo canceler section of the documentation, as
well as postings indicating that making the filter too long would
result in the training taking to long. I just never imagined there was
such a delay between the CallFlowGraph and actual speaker output on
this software, and had never gone beyond a 200ms filter length.<br>
<br>
Thank you again,<br>
Charlie Hedlin<br>
<br>
Jean-Marc Valin wrote:
<blockquote cite="mid1150412380.20831.37.camel@idefix.homelinux.org"
type="cite">
<blockquote type="cite">
<pre wrap="">The preprocessor works for AGC (I have discovered my enviroment is too
noisy for AGC, as the background it way too loud during periods of
silence even with a noise canceling mic), but the denoiser seems to make
the sound tinny and distorted at times.
</pre>
</blockquote>
<pre wrap=""><!---->
That's a side effect of it for now.
</pre>
<blockquote type="cite">
<pre wrap="">The echo canceler doesn't seem to work at all. What is the longest I
can set the filter length to and still have it adapt in a reasonable
time frame? I am using 80 sample frames and a filter length of 800
samples right now.
</pre>
</blockquote>
<pre wrap=""><!---->
10 ms should work, but you could try with 20 ms. Try testecho to make
sure it's not your code. Also, please read the echo canceller section of
the manual (the one in the tarball, not the website).
Jean-Marc
</pre>
</blockquote>
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