Displaying 20 results from an estimated 10000 matches similar to: "Can't seem to turn off VAD"
2008 Dec 11
1
preprocessor VAD only rocognize between silence and not silence
Hello,
in my project im using speex 1.2rc1 and the preprocessor VAD seems to
only separate complete silence from not complete silence frames.
The Speex Manual, you can read "The voice activity detector (VAD)
provided by the preprocessor is more advanced than the one directly
provided in the codec."
but if you go to the source code in preprocess.c line 995 "/* FIXME:
This VAD
2008 Dec 15
0
preprocessor VAD only rocognize between silence andnot silence
Jesus,
Unfortunately, FFT and magic algorithms don't work (yet?). You
might want to try this if you're not satisfied with Speex VAD:
http://lists.xiph.org/pipermail/speex-dev/2008-August/006860.html
It won't perform any miracles, but I think it works pretty well
and is easy to tweak.
Tom
>---- Original Message ----
>From: jmorion at toomeeting.com
>To: speex-dev at
2006 Oct 24
1
Does VAD/DTX work without VBR and Preprocessor
Hi Marc,
Thanks for your quick response.
So if VAD is enabled then VBR will be enable although it's a special VBR.
How about take out the VAD code from the VBR and remove the code else?
Lianghu
On 10/24/06, Jean-Marc Valin <jean-marc.valin@usherbrooke.ca> wrote:
>
> > 1) there are VAD related codes in the source file preprocess.c.
> > Will VAD still work If I
2006 Oct 24
2
Does VAD/DTX work without VBR and Preprocessor
Hello,
I'm try to run speex on some ARM processor.
I'd like to cut away some speex features including VBR, ABR and preprocessor
while still supporting VAD/DTX.
But I've found some puzzles in the source code regarding VAD as below,
1) there are VAD related codes in the source file preprocess.c.
Will VAD still work If I don't use the source file preprocess.c?
2)The speex manual
2005 Jun 27
1
VAD encoder sensitivity?
Hi,
When using the encoder function, speex_encode_int(st, in_short, &bits),
with VBR disabled and VAD enabled, the function always return a 1.
Also, when enabled DTX along with VAD enabled, most of the time the
function return a 1 even when it is silence.
Is there a way to change the sensitivity of the VAD by changing some
parameters in the source code, so when it is silence, the
2009 Mar 17
1
VAD speex 1.2rc1
My data is speech sampled as pcm mono 32khz.
I want to use vad for regulating the agc gain mechanism.
So... if voice is not detected I just reduce the agc value
in order to not amplify the 'silence' otherwise we just
increase the agc value if it is below the minimum.
Thanks,
Daniel
----- Original Message -----
De: Jean-Marc Valin <jean-marc.valin at usherbrooke.ca>
Para: danflu at
2005 Dec 27
0
Re: Fixed-point VAD?
> I found this message concerning VAD and was wondering whether VAD has
> been ported to fixed-point in the latest version?
Sorry, VAD is still float, but if you're using the built-in one, float
emulation should work (it's not very compute-intensive).
Jean-Marc
> Thanks,
> SingHui
>
> ---------- Forwarded message ----------
> From: Jean-Marc Valin
2011 Sep 04
1
Speex VAD always returning 1
This works well. Thanks for the link. However I am curious about something. Speex requires a VAD for the VBR mode and the comfort noise preservation. Is the Speex portion for this different than the VAD result returned from the preprocessor call?
Vas
________________________________
From: speex-dev-bounces at xiph.org [speex-dev-bounces at xiph.org] On Behalf Of Ken Smith [ken at alanta.com]
2009 Aug 12
0
VAD performance worse on version 1.2rc1 than 1.1.12
Thank you, but I am thinking about trying to move VAD implementation from
1.1.12 to 1.2.
I'm not sure about how difficult it could be (maybe impossible due to Jean
Marc has disappear).
Have you tried this?
Cecile.
2009/8/10 jesus <jmorion at toomeeting.com>
> Hi Cecile,
>
> it seems it is a tabu theme, or nobody uses VAD on speex. I've tried
> with external EasyVAD
2009 Aug 10
2
VAD performance worse on version 1.2rc1 than 1.1.12
Hi Cecile,
it seems it is a tabu theme, or nobody uses VAD on speex. I've tried
with external EasyVAD solution but the result was not as spected.
Other users of the list suggest an algorithm to filter voice based on
the power of the signal, but of course, it is not a voice activity
detection.
I am waiting also a solution for this, while so I use version 1.1.12.
Regards.
Cecile Dumotier
2005 Dec 26
2
Fixed-point VAD?
Hi,
I found this message concerning VAD and was wondering whether VAD has been
ported to fixed-point in the latest version?
Thanks,
SingHui
---------- Forwarded message ----------
From: Jean-Marc Valin <Jean-Marc.Valin@usherbrooke.ca>
Date: Jul 22, 2005 1:02 AM
Subject: Re: [Speex-dev] Fixed-point
To: gue baja <gue_baja@yahoo.com>
Cc: speex-dev@xiph.org
Hi Baja,
Here's a quick
2011 Aug 29
3
Speex VAD always returning 1
From 1.2rc1 source code:
preprocess.c:
/* FIXME: This VAD is a kludge */
st->speech_prob = Pframe;
if (st->vad_enabled)
{
if (st->speech_prob > st->speech_prob_start || (st->was_speech &&
st->speech_prob > st->speech_prob_continue))
{
st->was_speech=1;
return 1;
} else
{
st->was_speech=0;
return 0;
}
} else {
return 1;
}
AND
case
2009 Jul 27
2
VAD performance worse on version 1.2rc1 than 1.1.12
Hi, I decide to write to the list because of a strange behaviour when
updating from version 1.1.12 to 1.2rc1.
My software was running fine with version 1.1.12, but now I want to benefit
from advances on AEC.
After updating the library to 1.2rc1 and do few changes on my sources, I run
the application and discovered that VAD doesn't work so fine as in previous
version 1.1.12 (3 years ago).
I
2009 Jul 31
0
VAD performance worse on version 1.2rc1 than 1.1.12
Hi, I decide to write to the list because of a strange behaviour when
updating from version 1.1.12 to 1.2rc1.
My software was running fine with version 1.1.12, but now I want to benefit
from advances on AEC.
After updating the library to 1.2rc1 and do few changes on my sources, I run
the application and discovered that VAD doesn't work so fine as in previous
version 1.1.12 (3 years ago).
I
2004 Aug 06
1
rgding VAD
On Tue, 2003-04-15 at 11:31, Jean-Marc Valin wrote:
> > How do i detect whether there is silence in media using speex?
> > Is there any API which decides that the audio data only contains
> > silence?
> > Basically i will have PCM linear data, I want to know whether it is
> > complete silence.
>
> Well, the best way is probably to turn VAD *and*
2003 Sep 09
1
Should Speex VBR Introduce Distortion?
Hi All,
I've run into a small hiccup in encoding my audios with Speex. When I
encode audience laughter and applause with 'speexenc' (version 1.0.1),
the result is quite acceptable... until I enable VBR. Then it distorts
horribly.
My understanding of VBR is that it frees the encoder to vary the number
of bits emitted to better maintain the quality requested, and so I would
have
2006 Dec 25
1
A case including VAD bug
Hi all:
I was analysising the speex code these days and learned much from it.
Thank you so much!
But I have a question about VAD:
After preprocess(denoise and agc are off, vad is on),the input pcm speech
was distorted seriously.The input speech include ten syllables(one~ ten),
but the output speech lost one!
Can you tell me why? Please see the attachment about input and output:
(See attached
2004 Aug 06
0
rgding VAD
> How do i detect whether there is silence in media using speex?
> Is there any API which decides that the audio data only contains
> silence?
> Basically i will have PCM linear data, I want to know whether it is
> complete silence.
Well, the best way is probably to turn VAD *and* DTX on. Then when
there's silence, the speex_encode function will return zero, which
2011 Aug 29
0
Speex VAD always returning 1
For what it's worth, I've had significantly better luck with the WebRtc VAD.
It's pretty good.
http://code.google.com/p/webrtc/source/browse/#svn%2Ftrunk%2Fsrc%2Fcommon_audio%2Fvad%2Fmain%2Fsource
In general, the WebRTC voice engine seems to be more sophisticated and
mature than the Speex preprocessor (as opposed to the Speex codec, which is
pretty good).
Ken Smith
Cell:
2010 Oct 28
1
Problem with VAD in preprocessor on iPhone
Hello,
I am attempting to use Speex in an iPhone application and running into an
issue. I got speex to compile by following these instructions:
http://codeforfun.wordpress.com/2010/04/29/compile-speex-for-iphone/
Next, I was able to record some audio and play it back. I then inserted a
call to the speex preprocessor and am passing all of the audio buffers I
receive from Audio Queue Services