search for: denoising

On 06/04/2010 07:37 PM, Jean-Marc Valin wrote: > On 10-06-04 05:16 AM, Gurinder Singh wrote: > >> I have been developing an audio application using Speex. To reduce the >> background noise in the captured audio I have enabled the denoise >> feature and set the noise suppression level to 60. >> > There you go, don't do that. There's a reason

Hi I have been developing an audio application using Speex. To reduce the background noise in the captured audio I have enabled the denoise feature and set the noise suppression level to 60. Although the constant background noise is reduced but using denoise introduces a weird effect in the audio which can be described as 'Drain Pipe' effect. Has anyone faced a simiar issue with the

...ssing? Sincerely, Scott Searcy -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm -------------- next part -------------- An embedded message was scrubbed... From: Ralph Giles <giles@xiph.org> Subject: Re: Denoising only Date: Tue, 22 Mar 2005 15:39:17 -0800 Size: 2137 Url: http://lists.xiph.org/pipermail/speex-dev/attachments/20050324/924eaaa0/attachment.mht

...ch background noise. With VAD+denoiser enabled, I never have any trouble hearing him. This gives me the impression that VAD doesn't function too well when the input is noisy, even if the denoiser can do an excellent job of cleaning up the signal. So it seems that VAD is being done before denoising, and looking at the code for speex_preprocess(), I think this is the case. (Am I wrong?) Why not do VAD after denoising? It seems like it would be much more reliable. Tom Tom Harper (tharper@sightspeed.com) wrote: > > Steve, > > The main problem I am having with the system is c...

Hello, I have been working with the denoiser in the Speex library and have a few questions. Some information before I get started: Speex version: 1.1.9 (as near as I could tell nothing new in the denoiser in cvs) Audio input: 32bit float - 48000 sample rate (the input starts from jackd) The first thing I am finding is that I can understand the audio in

Hi. There is denoise for preprocess during encoding. The nature of my source is unpredictable and sometimes the result is better off if I dont have denoise ON when I save my encoded speex file. So, I would like to implment a real time denoise during decoding/playback time, (instead of having the denoise result saved into speex-encoded file). Is there such denoise-preprocess function that runs

Tom Harper wrote: > Hi All & Jean Marc, > > Once again I find myself delving into the pre-processing code to fiddle > with the VAD, AGC and denoising code. > > Where i am at is that I have implemented all of Steve Kann's mods, and > they are 90% of the way there in terms of working, except that I am still > having issues denoising open air mics. But that is tangential to my > question- > > I was wondering what the foll...

...ld someone be able to point me in the right direction on how to denoise univariate data using one of wavelet packages available in R? Thank you very much Jane ps kalman filter does a good job on my data but tends to dampen spikes too much so i was looking to compare its performance with wavelets denoising. -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at sta...

Hello, The denoiser was good with a car noise or a raod noise before the r11739. But for some situation, the actual version is perfect. That's why I think that if we can adjust the agressivity of the denoiser, we can respond to all of the situations. Maybe two parameters should be enough : high or low. For the AEC, I have to test with older versions because it's another person that

hi! I'm using the speex library in my RTP project (i'm using GNU ccRTP library). My program creates and destroys speex objects everytime a new RTP connection is made. But, when i test it with a client which create a connection to it one after another, the free memory decrease constantly to the point where the programs execution crash because not more free memory. It seems like the

Hi, I just downloaded http://www.speex.org/download/speex-1.1.4.tar.gz and tried to build it but the file denoise.c seems to be missing from the archive. Can you fix this or is it better to get everything from cvs? Another question, when will a stable version of 1.1 be released. I'm interested in the preprocess features but I would also like a stable encoder/decoder :-) Best regards, Chris

Hi all, I'm developing a VoIP application for my IPAQ 5450 and from some moths i'm using speex as codec. Now is the time to obtain the best possible audio quality. As my PocketPC is not a smartphone my main problems are the echo cancellation and the noise. As the first one can be solved by using headphones how can i solve the second? Do someone have some hint for me regarding the

Hi, I'm trying to use a denoiser on a wince with a FIXED_POINT defined. Denoiser works OK - it removes the noise, but then it unacceptable hurts a voice. Here is a code that I use: #define TEST_DENOISE_SAMPLES 2000 void test_denoise() { FILE *fin; FILE *fout; spx_int32_t rate=0; int chan=1; int fmt=16; int denoise_enabled = 1; SpeexPreprocessState *preprocess;

Hello, when I call my conference, I see this error in my logs: ERROR: Function DENOISE not registered here is snippet from extensions.conf ... same => n,Set(CONFBRIDGE(user,announce_join_leave)=yes) same => n,Set(CONFBRIDGE(bridge,record_conference)=yes) same => n,Set(CONFBRIDGE(bridge,record_file)=/home/asterisk/file.wav) same => n,ConfBridge(1000) same =>

Hi All I am using speex in one of my WinCE project. I have been trying to use speex to perform denoise on the captured audio packet and echo cancellation. Following behavior I have observed while using various options. I would really appreciate if you could help me with the issues I am facing. 1. Denoise: I have written the following to code to perform denoise. //To initialize speex

Hi Jean Marc & List, So I have been fiddling with the denoiser (again). While poking around I noticed that nb_preprocess is basically a counter that is mod-ded with 100 (the default), which causes Smin[] to be re- seeded with the value in Stmp[] (min of the previous adaptation period). Smin[] is then used to update the noise probability, which is (probably) less likely when adaptation

OK, so the problem doesn't seem to be the VAD specifically. Can you tell me how much audio you had in the test? It may be that nothing's wrong and the code just isn't so fast that you can do 100 channels. Or maybe it just needs a bit of optimization... Jean-Marc Le mer 31/03/2004 à 10:03, Steve Kann a écrit : > Jean-Marc Valin wrote: > > >If you set the denoiser

Hi Tom, Of course the current tuning of the denoise is approximative and could probably be improved... That being said, the modulo 100 isn't the adaptation time itself, but rather the window over which to look for minima. The main idea is this: if the power in a certain bin isn't too much higher than the minimal value for a certain window, then we can adapt the noise estimate. The

Hi I am trying to use the Denoise option of speex but unable to do so successfully. I would really appreciate if some one could help me and identify what exactly wrong i am doing... I am using below code to perform denoise. //Initialize speex preprocess state and set the denoise option int nEnable = 1; SpxPreprocessState = speex_preprocess_state_init(160, 8000);

...re a minor deal in comparison with the clipping problem. Tom <p><p>At 03:40 PM 5/17/2004, Steve Kann wrote: >Tom Harper wrote: > >>Hi All & Jean Marc, >> >>Once again I find myself delving into the pre-processing code to fiddle >>with the VAD, AGC and denoising code. >> >>Where i am at is that I have implemented all of Steve Kann's mods, and >>they are 90% of the way there in terms of working, except that I am still >>having issues denoising open air mics. But that is tangential to my >>question- >> >>I was...