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...rdinary people have systems that do not meet your stringent specifications. It does not matter what OS you or I use. It's the customers for whom this work is done. -----Original Message----- From: Jean-Marc Valin [mailto:Jean-Marc.Valin@USherbrooke.ca] Sent: Monday, July 02, 2007 6:35 PM To: Coffey, Michael Cc: speex-dev@xiph.org Subject: RE: [Speex-dev] Backup Echo Suppression Selon "Coffey, Michael" <mcoffey@avistar.com>: > Believe me; I've "played with" priorities and buffering. Then either you haven't played well enough or you're using a braindea...

...ring. Did you just say you have no idea how the Speex residual echo suppressor works? If that is the case, can you tell me where I could get some information about it? -----Original Message----- From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] Sent: Friday, June 29, 2007 7:38 PM To: Coffey, Michael Cc: speex-dev@xiph.org Subject: Re: [Speex-dev] Backup Echo Suppression Coffey, Michael a ?crit : > I realize that the preprocessor echo suppression is not designed > specifically to counter the effects of data loss. On the other hand, as > much as I might like to, I do not have...

...tion known to date". Or maybe the manual is the right place. Anyway, out of all the challenges in constructing a VoIP system, it seems echo cancellation is easily the most difficult. But it's also extremely valuable functionality. So these issues will just keep coming up. Tom "Coffey, Michael" <mcoffey@avistar.com> wrote: > > Millions of ordinary people have systems that do not meet your stringent specifications. > > It does not matter what OS you or I use. It's the customers for whom this work is done. > > -----Original Message----- > Fro...

...prefix/my-prefix/picture/1 I may be doing this wrong. It does work properly without --prefix in the mix, and i can see how both these methods might add the prefix, causing this problem. Is this a bug? Known problem? Limitation of -- prefix? Or just a confused poster? Thanks! Geoff ? Geoff Coffey | 602.384.1804 9 Tips for FileMaker 9 http://sixfriedrice.com/wp/category/filemaker-9-tips/

...algorithms that exhibit artifacts but that may not depend on the fine time structure of the audio signals. Is this not true of the preprocessor echo suppressor? -mjc -----Original Message----- From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] Sent: Tuesday, June 26, 2007 8:49 PM To: Coffey, Michael Cc: speex-dev@xiph.org Subject: Re: [Speex-dev] Residual Echo Suppression by the Preprocessor The residual echo suppression is supposed to be working decently well now. However, it's not designed to counter the effects of samples being dropped off the soundcard. You'll just need t...

Selon "Coffey, Michael" <mcoffey@avistar.com>: > Believe me; I've "played with" priorities and buffering. Then either you haven't played well enough or you're using a braindead OS. > Did you just say you have no idea how the Speex residual echo suppressor > works? If t...

Since you asked for comments... Personally, I'm disappointed to see Speex moving to Git from Subversion. I had just recently learned how easy it is to track progress of Speex using TortoiseSvn. That being said, I'm sure Jean-Marc knows best what the issues may be. How many people are expected to commit on this project this year? -mjc

...I gather that prop[] contains proportional adaptation rates. I guess I'll have to read up on the MDF algorithm to get a better sense of what that means. Thanks -----Original Message----- From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] Sent: Thursday, June 07, 2007 4:55 PM To: Coffey, Michael Cc: speex-dev@xiph.org Subject: Re: [Speex-dev] Time Delay Estimation > Does the echo canceller maintain some data structure that I might be > able to use if I wanted to estimate the amount of delay between the > near-end and far-end signals? I'd like to be able to do this in...

Six Fried Rice Contact: Geoff Coffey Phone: 602-384-1804 Email: geoff-5v4lRIDW0s4umAx9uhQu3g@public.gmane.org Ruby On Rails, Today''s Hottest Web Framework, Now Supports FileMaker Server Six Fried Rice, a FileMaker Pro Services Provider, Releases Rfm, a Free Open Source FileMaker API for Ruby and Ruby on Rails. The buzz ab...

It appears that both the echo canceller and the noise reducer (NR) introduce rather severe clicking artifacts when presented with audio that has slightly overloaded the A/D converters. I am talking about speech that sounds just slightly distorted, due to clipping, when simply played back. If I pass that speech through the echo canceller or the noise reducer, it acquires really loud clicks and/or

wow! i must say vorbis deprecates mp3! lol. although, i had to use the "OSS/3d for XMMS" plugin on my sblive value w/ 4 point sound to get a proper base. On my other box with a diff card, bass is just fine. however, are there any h/w players for vorbis files? the faq only states one manufacturer called iObjects but i see no portable players! Basically, i want to player vorbis files

...(Butm generally with the Tortoise front-end FWIW. I don't think I've changed anything except back when we needed the AEC patch or to make a project file build. -----Original Message----- From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] Sent: Monday, June 11, 2007 4:27 PM To: Coffey, Michael Cc: speex-dev@xiph.org Subject: Re: [Speex-dev] RE: Moving to Git Coffey, Michael a ?crit : > Personally, I'm disappointed to see Speex moving to Git from Subversion. > I had just recently learned how easy it is to track progress of Speex > using TortoiseSvn. Don't worry...

Has it been a whole week since a question about VAD? :-) I am curious why the VAD algorithm described in G.729 Annex B is not used by Speex. Complexity, Patent, Quality, or what? -mjc

Steve Underwood a ?crit : > Coffey, Michael wrote: >> Has it been a whole week since a question about VAD? :-) >> >> I am curious why the VAD algorithm described in G.729 Annex B is not >> used by Speex. Complexity, Patent, Quality, or what? >> > Its not only patented, its so darned good they rece...

Coffey, Michael a ?crit : > I realize that the preprocessor echo suppression is not designed > specifically to counter the effects of data loss. On the other hand, as > much as I might like to, I do not have the option to "fix that problem > for real." The sad truth is that some end...

Hi Folks, I am having trouble using speex_echo_cancel. As a starting point, I am using the testecho.c source code. I compiled the 1.2beta1 version. I have not tried any other versions of speex. The document says that the order of arguments to Speex_echo_cancel is (echo_state, input_frame, echo_frame, output_frame, residue) where "input_frame" is as captured from mic and

...ted at all. In case it helps, "out" has a "numeric" mode, and is a "matrix"... I've written these functions and loops using online help and examples I've found on websites, but clearly I'm missing something. Thanks for any help you can give!! ~Stephanie Coffey

...ny tunable parameters besides tail length? I am wondering about the aggressiveness of adaptation and I know you are an expert in that area. Thanks so much, Michael -----Original Message----- From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] Sent: Friday, October 27, 2006 4:22 PM To: Coffey, Michael Cc: speex-dev@xiph.org; Vysotsky, Vladimir Subject: Re: [Speex-dev] Echo Canceller trouble in 1.2beta1 Can you first try the svn version (or apply https://trac.xiph.org/changeset/11882). As I mentioned in a previous email, there's a bad bug in the 1.2beta1 echo canceller. Jean-Marc...

What is the current status of the residual echo suppressor in the preprocessor? I ask this because I have occasional problems with the AEC, in which it fails to cancel echo. I think the problems have to do with samples being dropped by the audio IO system, which is effectively impossible to detect and counteract reliably. A colleague recommended using an echo suppression technique (which he

I need to calculate the probability that a sample quantile will exceed a threshold given the size of the iid sample and the parameters describing the distribution of each observation (normal, in my case). I can compute the probability with brute force simulation: simulate a size N sample, apply R's quantile() function on it, compare it to the threshold, replicate this MANY times, and count the