similar to: Speex-dev Digest, Vol 69, Issue 8

Hi, Can anybody show me how to enable stereo AEC, I tried with the following code and the result is bad, degraded output. Init: ec_state = speex_echo_state_init_mc(frame_size, aec_tail, 2, 2); speex_echo_ctl(ec_state, SPEEX_ECHO_SET_SAMPLING_RATE, &sample_rate); preprocess_state_left = speex_preprocess_state_init(frame_size, sample_rate); preprocess_state_right =

Aymeric Moizard a ?crit : > > I'm working on the echo canceller with the SVN, with Windows Mobile 5 > PocketPC. > > Obviously, I can't make it run correctly. What happens/doesn't happen? > My question: If I use the SPEEX_PREPROCESS_SET_ECHO_STATE, I have > changes in the sound: noise seems to be removed. Noise should be removed even without

Hi, I wanted to know how the speex echo canceller can be used for multiple channels audio. I am aware that support had been added for multiple speakers and multiple microphones. Is there any documentation on how speex_echo_state_init_mc can be used in conjunction with speex_channel_decorrelate? Thanks, Mustafa -------------- next part -------------- An HTML attachment was scrubbed... URL:

I am trying to compile speexclient.c. I downloaded all the files to ~/speex- 1.2beta1/include When I call ./compile.sh I get the following errors, speexclient.c: In function 'main': speexclient.c:164: error: 'SPEEX_PREPROCESS_SET_ECHO_STATE' undeclared (first use in this function) speexclient.c:164: error: (Each undeclared identifier is reported only once speexclient.c:164:

Hi, Two related news here. First, I've merged in support for stereo (or more channels) acoustic echo cancellation in mainline. The standard AEC remains the same, but I added a speex_echo_state_init_mc() call that takes the number of speakers and microphones. Now, one of the consequence of this new work is that by merging this work into the main tree, I had to do things in git that svn just

I am using 'portaudio' and 'speex' to implement a speech audio capture/playback. Preprocess works fine but not the echo canceller (associated with preprocessor). I have read 'testecho.c' but it didn't help me. What I am doing bad? This is my implementation: One thread to capture and playback, both are different functions called in different times directly from

Hi, I've set up speex AEC in our application. The echo's seem to be canceling, but the captured voice is distorted somehow. It sounds to me like low and/or high frequencies are removed. This happens even if I set my playback(echo) data to only zero's. Is this "normal" for the AEC? As far as I understand, if I send 0's as playback/echo data, the resulting data should be

Hi, I plan to use AEC for a live performance, storytelling for very young children (and their parents!) in a mongolian yourte . Actually the storyteller can make vocal loops, there is an omnidirectional microphone in the center of the yourte, 5 loudspeakers in a circle along the yourte's wall and Pure Data in a linux box. And now she wants to make vocal loops over music and loops over

Hello, all. 1) ACE does not work for me I am in a voip project using Speex, failed to have hte Speex ACE work. here is how I initialize it: /** * Configurations : * #define BITS_PER_SAMPLE (16) * #define SAMPLE_RATE (8000) * #define CHANNEL_NB (1) * #define DURATION (20) * SPEEX_MODEID_NB */ _eco_state = speex_echo_state_init(_encframe_size, 10*_encframe_size); speex_echo_ctl(_eco_state,

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

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 to fix that problem for real. Jean-Marc Coffey, Michael a ?crit : > What is the current status of the residual echo suppressor in the > preprocessor? > > I ask this because I have occasional

Hi, I am developing real time audio application and I need to cancel echo. First I tried to make simple echo cancellation test application to test if my code will work. I make a call with two SIP phones (one with speakerphone). I dumped the RTP streams via wireshark and dumped it to the PCM 16 audio (8000 samples). 160 samples per 20ms and I used 640samples tail. I try this test data on the

I'd like to maintain the speex preprocessor in an idle state when no communication is needed. Purpose: keep the SpeexEchoState struct content "frozen" as to restore last controlled cancel state for reuse with resumed communication. Since the audio path to speaker and mic is intended to be kept alive permanently, the echo delay should remain constant, a prerequisite for

Anton A. Shpakovsky <saa <at> tomsksoft.com> writes: > > As for me - speex_echo_cancellation is a better choise. Try using it in > capture thread instead > of those speex_echo_capture and speex_echo_playback functions. > > And please, describe your problem in details. Cause the fact that you > "didn get echo cancellation" > doesn't mean you are

Well, I'm not a professional in AEC theory, but what I've mentioned is: speex_echo_state_init(20, 320*10) - frame size should correspond to 20ms. At your sampling rate (16000hz) is should be 16K*0.02 = 320. The same I can notice about echo tail. 100ms: 16000*0.3 = 4800, not 3200 as you has. But that's not crucial I think. Just wanna you get the point. "Internally,

I wish Speex could come with instructions on how to build libspeex_armce.lib. ________________________________ From: speex-dev-bounces@xiph.org on behalf of speex-dev-request@xiph.org Sent: Mon 11/13/2006 3:01 PM To: speex-dev@xiph.org Subject: Speex-dev Digest, Vol 30, Issue 15 Send Speex-dev mailing list submissions to speex-dev@xiph.org To subscribe or unsubscribe via the World

The Asterisk Development Team has announced the releases of: DAHDI-Linux-v2.7.0-rc1 DAHDI-Tools-v2.7.0-rc1 dahdi-linux-complete-2.7.0-rc1+2.7.0-rc1 This release is available for immediate download at: http://downloads.asterisk.org/pub/telephony/dahdi-linux http://downloads.asterisk.org/pub/telephony/dahdi-tools http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete In this release: *

The Asterisk Development Team has announced the releases of: DAHDI-Linux-v2.7.0-rc1 DAHDI-Tools-v2.7.0-rc1 dahdi-linux-complete-2.7.0-rc1+2.7.0-rc1 This release is available for immediate download at: http://downloads.asterisk.org/pub/telephony/dahdi-linux http://downloads.asterisk.org/pub/telephony/dahdi-tools http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete In this release: *

The Asterisk Development Team has announced the releases of: DAHDI-Linux-v2.7.0 DAHDI-Tools-v2.7.0 dahdi-linux-complete-2.7.0+2.7.0 This release is available for immediate download at: http://downloads.asterisk.org/pub/telephony/dahdi-linux http://downloads.asterisk.org/pub/telephony/dahdi-tools http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete In this release: * Driving closer

The Asterisk Development Team has announced the releases of: DAHDI-Linux-v2.7.0 DAHDI-Tools-v2.7.0 dahdi-linux-complete-2.7.0+2.7.0 This release is available for immediate download at: http://downloads.asterisk.org/pub/telephony/dahdi-linux http://downloads.asterisk.org/pub/telephony/dahdi-tools http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete In this release: * Driving closer