similar to: Echo cancellation ot working

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

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

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

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 =

If the left and right channels are processed separately as you do, the parameter Mic-Number in speex_echo_state_init_mc should be 1, not 2 On Wed, Feb 10, 2010 at 4:00 AM, <speex-dev-request at xiph.org> wrote: > Send Speex-dev mailing list submissions to > speex-dev at xiph.org > > To subscribe or unsubscribe via the World Wide Web, visit >

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:

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'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

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

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,

Hi list members! Probably this one isn't even samba-related, but as I do not fully understand the error messages and this list is read by people who work wokr with samba more often than me, I hope someone can help me. Okay, here is what I've got. I boot knoppix on a workstation and start a script, which backs up the harddrive onto another PC which is running Windows NT Workstation.

Hello All, I've just been made aware of Asterisk and have installed it. Things seem to be working: I can dial from the console the internal numbers and hear the answerphone messages and do other interesting stuff. however when I hangup the call I see a continuous stream of messages saying "Sound: Recording overrun" appear on ALL my linux consoles and I can't see what I'm

Hi, I'd like to try using a good quality microphone and a set of PC speakers (in the first instance) to create a powerful speakerphone; if I get that working, I'll probably try more elaborate audio equipment. For this to work, I'll need software acoustic echo cancellation, or the caller at the other end will constantly hear his/her voice echoing back. I gather Asterisk can do

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

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 doing smth wrong. Regards, Anton A. Shpakovsky -----Original Message----- From: speex-dev-bounces at

Mike Ball a ?crit : > We?re investigating acoustic echo cancellation solutions for a speech > application. Our hardware will be a TI C64x+ series processor (DM6467) > which has both a DSP and ARM9 core. Our audio will be sampled at 8kHz > and fed in through the I2S ports on the DM6467, echo cancelled, and then > encoded in G.711. As such, I?m really interested in the echo >

Hi Jean, I got the earlier problem fied with correct NN and tail values. But I dont see any echo being cancelled. To the echo cancel API I am giving, audio packets that are being played currently and audio packets that are captured from the mic. Since the audio packets being played came from machine B (as in a normal VoIP call), could this be a potential problem? As the packets being compared

On closer looks and debugging I always end up in speex_echo_cancel function with comment /* Temporary adaption rate if filter is not adapted correctly */ Does this give any clue to the problem? I wonder why it would not find its mirror image as an echo and do echo cancellation? Any insight is appreciated. If you need some more data, tell me. Thanks -Anurag Quoting ac2491@columbia.edu: >

Definitely! It tells me that my delay is fine but drifting is -15. I use the same onboard sound to record the near end and far end voice. So I can assume it should be fine? But I don't see the any different between input and output the echo_canceller function for this recording. Maybe there is some nonlinearity issue there? The link of this file(Capture1.zip) is in