similar to: Submitting a patch that exposes VAD voiced/unvoiced signal type

Hi Jean-Marc, We're exposing the opus_internal_flags data structure so that we can access the value assigned to prevSignalType. Here's a snippet of our code: error = opus_encoder_get_internal_flags(vad->opus, &internalflags); if (error != OPUS_OK) { return OPUSVAD_OPUS_ERROR; } cur_signal_type = internalflags.prevSignalType; if

Hi Jean-Marc, Thank you for the valuable feedback. You're correct in that we focused on enabling this just for SILK. Because our solutions are focused on voice, we did not explore doing the same in CELT mode, but we can certainly look into the details of analysis.c. Regarding the concern of exposing internals, do you have a specific proposal in mind? We've been sharing this patch with

Hi Peter, Can you say a little bit more about what you're doing exactly with the information you're exposing and how? unfortunately, I don't have a concrete proposal in mind right now. That's in part because I don't quite understand the use case, but also because it's really hard to expose this kind of information in a way that both avoids breaking application with new

Hi Peter, There's two main issues with a patch like the one you're proposing. First, the data is only valid when SILK is being used and is essentially undefined in CELT mode. The second issue is that by exposing internals, it makes it impossible to improve these algorithms since it would break API compatibility. I'm not fundamentally against trying to expose some information, but

Hi. I would like to contribute to the project regarding exposing VAD information from opus frame. I think VAD flag is very useful in jitter buffer management. And it can be used at end-point detection for voice recognition, too. As you know, there isn't VAD flag in CELT mode. So, in my proposal all frames are assumed active signal in CELT mode. It works on only single packet. In multiple

Hello, I'm using Speex Preprocessor to supress noise, eliminate echo etc. But I have another preprocessor state that I want to use ONLY to determine voice activity. int res = speex_preprocess_run(m_VADOnly, (spx_int16_t *) pStreamSampleBuffer); pStreamSampleBuffer is modified after call to speex_preprocess_run. I have manually turned off noise suppression and AGC but anyway - VAD modifies

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

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

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

As I understand it, there are two separate ways to get VAD information from Speex: 1) Using the encoder. 2) Using speex_preprocess(). I present the following observations from an application developer's perspective. They may be wrong, in which case I would appreciate corrections. - The two VAD systems are implemented differently. - speex_preprocess()'s VAD provides more accurate

Hi, Is there is some form of VAD on * for SIP channels, cause I have a problem with MOH. I made an extension which simply plays MOH, when I dial that extension with my ATA188 MOH sounds choppy if I talk on the phone the MOH keeps playing. I saw the sip channel (show channel SIP/*) and I see no packets going in/out when I talk then packets shows going in/out. I don?t have this kind of problem

Hi List, i've set up a cisco 7912 for my asterisk box. I've had problems with VAD and CNG. After googling a bit, i've found an article about asterisk not supporting these two protocols, therefore it's better to turn them off. Since then i did not found answer to my two questions, maybe somebody here could help me: a) am i even able to turn off vad/cng on cisco 7912? SIP

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7226.0"> <TITLE>Speex VAD algorithm</TITLE> </HEAD> <BODY> <!-- Converted from text/rtf

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

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

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

Does the Asterisk server support VAD (aka Silence Suppression)? I want my SIP phones (7960's) to use VAD when dialing out the x100P interface. I know the phone can do VAD , can the Asterisk server be setup to do it? and if so, where do I set the configuration? Thanks Lee Goodman -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, I had the same experience. The VAD done in the encoder does not seem to work very well at all. However, the VAD done by speex_preprocess() works much better. You will also get better results if you enable the denoiser, I think. peex_preprocess_ctl(preprocess, SPEEX_PREPROCESS_SET_DENOISE, &denoise_enabled); speex_preprocess_ctl(preprocess, SPEEX_PREPROCESS_SET_VAD,

Greetings, I'm trying to create a server-based SIP chatroom (using MeetMe w/ ztdummy), where the clients will be mainly connecting with MS RTC Clients. I got the authentication working, but am having a problem where I can only hear audio when I am also making noise into the microphone. This appears to be the VAD/MOH problem mentioned on this list before.

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