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2004 Sep 27
2
Speex VAD algorithm
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2004 Aug 06
2
Server based audio merge
CELP based coders perform poorly when you mix streams. Perhaps, we need
a transform code or a subband code at somewhat higher rate 12-16 kbps
that will retain the quality after transcoding and mixing. Is the speex
ultra-wideband based on subband coding?
-Devendra Jalihal
<p>On Fri, 21 Nov 2003, Ulrich B. Staudinger wrote:
> Hi,
> been silent in this discussion for quite long ...
>
> Am Fr, 2003-11-21 um 08.07 schrieb Jean-Marc Valin:
> > There's no perfect solution to the multiple client problem. Each
> > approach has advanta...
2004 Aug 06
0
Server based audio merge
..., i don't know if we speak of the same ... The quality is ok, but
the encoding of a PCM frame on the tested machine took 2ms, which (if
the PCM frame is 7ms in length) means the machine can only encode three
streams in realtime ...
<p><p>Am Sa, 2003-11-22 um 03.30 schrieb Devendra Jalihal:
> CELP based coders perform poorly when you mix streams. Perhaps, we need
> a transform code or a subband code at somewhat higher rate 12-16 kbps
> that will retain the quality after transcoding and mixing. Is the speex
> ultra-wideband based on subband coding?
> -Devendra Jaliha...
2004 Aug 06
4
SHARC DSP
Anyone have any idea if the any of the Sharc or TigerSHARC DSPs are
powerful enough to do realtime Speex?
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2004 Aug 06
2
Some questions
Hi,
I might have written to this mailing list previously about this but I've
been experiencing some mailing problems so I write this again.
First of all, thanks Jean-Marc Valin for your continued efforts on
speex.
I must say that I am very impressed with Speex and further more the
innovative features recently added in 1.1.
They have worked great for me.
Question 1)
What is the return value
2004 Aug 06
3
Server based audio merge
There's no perfect solution to the multiple client problem. Each
approach has advantages and drawbacks:
1) Mixing at the server
- Allows a constant bandwidth for every client
- Allows compatibility with regular VoIP prones
- Requires transcoding, even when only on person is talking
- Higher bit-rate required for the general case (one speaker is talking)
2) Sending multiple streams
- Possible