Displaying 20 results from an estimated 40000 matches similar to: "Echo canceller problem"
2006 Jun 07
7
AEC frame size
?
hi all,
i am using the Acoustic Echo Cancellation from "Speex 1.1.12 version" in my VOIP application. Is it that the frame length to be chosen should always be 20ms or can i have flexibility in chosing the frame lenght?
on what parameters does the frame length choise depends?
thank you all,
Shri.
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2006 May 16
1
new assembler port
> I suggest that you start by looking at 8kbps, complexity 0.
Actually, I strongly recommand *against* using complexity 0, unless you're
really desperate for a few MIPS. The complexity reduction compared to 1 is
small, but the loss in quality can be significant.
> I (and others)
> are running that on a TI C55xx DSP, and it runs a little under 30 MIPs when
> I last checked, with
2007 Mar 05
1
Performance of the acoustic echo canceller
Hi All, I am working on my master project to port the Speex Acousic Canceller to FPGA. But I am not able to get a satisfied result in its performance whenI integrated it to a SIP softphone as my first step. The SIP softphone calls to a PSTN gateway and lands to my land line phone. I can hear the echo of my every word while I talks on the land line phone. I am using G.711 codec, frame_size 80
2005 Jun 03
1
Speex 1.1.9 is out -- Try the new echo canceller
Hi everyone,
I've just released Speex 1.1.9. The main change in this release is the
echo canceller work sponsored by Tipic Inc (http://www.tipic.com/). It
is now possible to do acoustic echo cancellation and obtain good
attenuation after a short adaptation time. This has been tested at 8
kHz, but it should also work at 16 khz and above, so give it a try.
There were also some fixes to the
2006 May 08
1
Speex echo canceller on TI C55 DSP
Jean-Marc,
I have traced the second infinite loop further. When st->adapted becomes
true (mdf.c line 623), the first Yf[i] value is 4, the leak_estimate is
0xd4e, the resulting r is 3. The first value in st->Rf is 0, so e is 1, and
r is set to e>>1, or 0. A little later there is a divide by r, and there is
the hang.
It seems that the 0 in Rf[0] is the problem, but I am not
2006 Apr 16
2
Capistrano and multiple Dev environments?
I have working copies of code in development on multiple places - work
machine, home machine, laptop, etc. I can''t always force these machines to
use the same credentials; I end up with each machine having slightly
different database.yml configurations.
With Subversion-Pre-Capistrano, I left the entire config directory out of
Subversion (or some kind of template; see
2006 Jun 09
4
Echo canceller problem
> > Hello everybody.
> > I have the same problem like you. I use ARM microcontroller too.
> > Here is the list of all functions called by speex_echo_cancel until goes
> > into infinite loop:
>...
> > else
> > {
> > do
> > {
> > kf_work(Fout , f, fstride*p, in_stride, factors,st); //
><----------
> > here this
2006 Aug 25
10
SVN security hole explained
Hi all,
If you are using Pound / Pen or another load balancer, I believe you
should read this:
http://blog.teksol.info/articles/2006/08/25/subversion-metadata-exposure-on-mongrel
My article refers to Dan Benjamin''s
http://hivelogic.com/articles/2006/04/30/preventing_svn_exposure
My point is that even though we are preventing Apache from serving
anything except a select few file
2008 Jul 01
0
[LLVMdev] llvm/tools/lto* rename heads up
I have experienced this with a svn 1.5 client but not with 1.4.6.
Did anybody see this with a 1.4.6 (or older) client?
Btw. what is the server version?
Anyway this seems to be a bug in subversion.
Cheers,
Gabor
PS: http://subversion.tigris.org/servlets/ReadMsg?list=users&msgNo=79361
On Jul 1, 5:27 am, Chris Lattner <clatt... at apple.com> wrote:
> Devang removed the old
2006 May 16
2
new assembler port
Hello,
I'm trying to use speex for implementing a VoIP demo application using
linphone
on an embedded system. At the moment I'm not really able to do real time
encoding,
and thinking about making an assembler port for speex to the AVR32
architecture.
The AVR32 is a new hybrid MCU/DSP fixed point processor running at
120Mhz in
my application.
Does anyone have experiences/info about the
2006 Aug 01
2
bits.c problem
I'm trying to use speex on OMAP's DSP using dsp gateway, and have some
questions. The code almost works (within few next days I'll post a some kind
tutorial and patches), but it seems to be a little bug in bits.c. The code
looks like this
void speex_bits_read_from(SpeexBits *bits, char *chars, int len)
{
////////////////// bla-bla-bla ///////////////////
for (i=0;i<len;i++)
2006 Mar 30
4
Capistrano Shovel onto Textdrive SVN error
I''m using the Shovel recipe to deploy my lovely app to text drive.
everyhting seems to be ok apart from the deploy action which fails
saying that there is "No such file or directory" I''ve included the full
error listing below.
The SVN definately exists because we''re using for development.
Does any one have any ideas what might be going wrong?
Thanks
Tom
2006 May 10
2
Speex echo canceller on TI C55 DSP
> Build 11387 produces the same result as my modified build 11343. Because of
> compiler limitations in the TI tools, I did have to make modifications to
> pseudofloat.h (separating return of float values) and nb_celp.c (adding
> braces around a variable declaration in the middle of code). I have
> attached a patch. You might prefer to do the nb_celp.c change in a
>
2006 Jun 07
1
How to freeze_edge with TortoiseSVN and InstantRails
I installed TortoiseSVN, created a local repository at
c:/instantrails/SVNRepository.
I have an app that I want to put into SVN and also do a freeze_edge for,
but I''m not sure how.
I ran command ''rake freeze_edge'' and got the error:
ERROR: Must have subversion (svn) available in the PATH to lock this
application to Edge Rails
rake aborted!
Any advice or links to a
2005 Apr 07
1
subversion
So R is on subversion right? So why doesn't somebody authoritative
get r-project.org on the subversion testimonials page?
http://subversion.tigris.org/testimonials.html
Just a suggestion.
--
Charles Geyer
Professor, School of Statistics
University of Minnesota
charlie@stat.umn.edu
2006 Jul 18
2
echo cancellation seg faults
Hi,
For my VoIP application machine A sends speex encoded audio of to
machine B and vice versa at. Data is captured in PCM 8Khz, 16 bit
and then encoded using speex 1.1.12
The packet A played and the packet A captured through mic are the
input to speex echo canceller. So I am trying to remove traces of
packet A played from the captured data. I have followed example
testecho.c
All I hear is some
2006 May 11
0
Echo Canceller Memory Usage, Frame Size
(from thread Re: [Speex-dev] Speex echo canceller on TI C55 DSP, but this is
a more general topic)
>> With these changes, the link was successful, using testecho.c with some
>> modifications for the C55 environment. The code and data memory
>> requirements were a lot more than I had hoped (>20kbytes of dynamic data
>> memory for block size=128, tail length = 1024),
2007 Sep 20
1
[LLVMdev] Building with Microsoft Visual Studio
Hi Richard,
> Unfortunately, I believe the issue is not that Cygwin contains GPL code, it
> is that applications which it compiles do. This is explicitly stated at
> http://cygwin.com/licensing.html:
>
If you have serious questions about the licensing of Cygwin/LLVM, you
really need to talk to a lawyer. No one on this list can give you
advice in that area which will accurately reflect
2007 Mar 06
1
Performance of the acoustic echo canceller
It seems like the firefox 2.0 not quite works with hotmail... I am reposting my message again
with IE for easy readability. Sorry about mess.
Hi Jean-Marc, Thanks for the suggesting. I tried the test wtih my recording file offline through the testecho.
I got the same result(no prepocessor echo suppression) as my recording file for that live call.
Basically I don't see the difference
2006 May 10
0
Speex echo canceller on TI C55 DSP
The builds that I referred to in my last mail should be 11398 and 11387, not
11387 and 11343. Sorry for any confusion.
- Jim
----- Original Message -----
From: "Jim Crichton" <jim.crichton@comcast.net>
To: "Jean-Marc Valin" <Jean-Marc.Valin@USherbrooke.ca>
Cc: <speex-dev@xiph.org>
Sent: Wednesday, May 10, 2006 11:47 AM
Subject: Re: [Speex-dev] Speex echo