similar to: Consult about speex echo cancelation

Hi Speex developer team, My name is Sheyla Rivera. Im from Ecuador. I am interesting in use speex in my project, in particular echo cancelation in a board of processor ARM7 using android. I do not find examples to test, I only found a little example, but I am confused in how use. Could you help me? Where can I find examples to do this? Thanks so much, Sheyla Rivera -------------- next

>> When the dust >> settles, I will send a patch with additions to the TI directory for the >> echo >> canceler example, including instructions on these last changes. Also, I >> would like to modify the memory allocation to follow the same structure >> as >> the encoder/decoder, including the ability to override the malloc >> function. >

Jean-Marc, Well I finally tracked down the problem. Then I checked my mail and found that you had fixed it several hours earlier. :( Build 11387 produces the same result as my modified build 11343. Because of compiler limitations in the TI tools, I did have to make modifications to pseudofloat.h (separating return of float values) and nb_celp.c (adding braces around a variable declaration

> Build 11387 produces the same result as my modified build 11343. Because of > compiler limitations in the TI tools, I did have to make modifications to > pseudofloat.h (separating return of float values) and nb_celp.c (adding > braces around a variable declaration in the middle of code). I have > attached a patch. You might prefer to do the nb_celp.c change in a >

Hi, I am just starting up on SPEEX AEC algorithm and have couple of questions around echo cancelation algorithm used in SPEEX. 1) Usually Echo Cancelation Algorithm has support for number of components ? - Non-Linear Processor (NLP) - Automatic Microphone Gain Control (AGC) - Transducer Equalization (EQ) - Dynamic Range Compression (DRC) - Ambient

hi all, Is the echo cancellation in the last svn version working ? As I'm running the testecho but with no change in the output ! Maybe my recordings are not correct. how ca I get correct input files or can some one provide such test files. Thanks in advance damencho

Hi Speex Developers, I'm Andrey Zhukov, the developer of PI-CONSULT GMBH company. Building a voip application that uses your libraries, i have found the strange problem with the latest version of Speex Libs. Our application works under win32, and i used before version speex 1.1.12 ( were built from sources). It seems i have resolved the known problem with clock drift of audio cards using

HI all, Having a mental block today - can someone confirm which direction the echo cancelation applies to for the Zap PRI channels? ie. is it removing traces of the transmitted data to the PSTN from the received data, *or* is it removing traces of the data transmitted to Asterisk from the data received back from Asterisk? Got a configuration that is based on a call made from the PSTN to a SIP

Hi All I Have an ISDN 30 circuit passing through an asterisk box to a legacy pbx, all is working well but I have had a problem that modems do not work, I thought of turning off echo cancelation but I cann t seem to find the ial switch do do it, could someone point me in the right direction to enable /disbale ec on a zap channel per call? Thanks Robb

Hello all, I am getting console debug messages about "tone detected on channel XX, disabling echo cancelation on channel XX" when using echocancel=yes with a Digium T1 card. does this mean that DTMF breaks the echo can? Does Asterisk permanently disable the echo can or is it for that channel instance only?

Hi ! I have a Digium TE411P with echo cancelation board. I'm not sure if i need to enable the "echocancelation=yes" in the zapata.conf file. Or since the card hast the echo cancel board, asterisk does not need that option. Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Anyone know if it is possible to control how aggressively the "Aggressive" mode behaves. Meaning, is it possible to dial back the aggressive mode to have a happy medium between Regular and the Aggressive defaults. I have a situation where Normal echo cancellation is not quite enough, however when I turn on aggressive mode We are attacking it to hard and I am unhappy with the walkie

Hi All, I have tried using echo cancellation, and I think it doesn't work well, because of how I resample. I take the raw 44100 Hz on my mac and just do a loop averaging every 5.5 samples to 1 sample to get 8018.18 Hz, and feed that to speex in 160 sample buffers. I realize that this introduces some aliasing, and I may try the new speex resampler, but I find it hard to believe that

Welcome everybody. I am new here on the list. Thank you very much for speex encoder and decoder. They are working great. I compile speex coded for str911 Arm processor. But I have a big problem with echo canceller from 1.1.12 speex package. I create echo canceler state: SpeexEchoState * echo_state = speex_echo_state_init(FRAME_SIZE, FRAME_SIZE * 5); FRAME_SIZE is in my project 160 samples.

I am trying to use the speex echo canceler and preprocessor with sipXtapi to develop a sip user agent. the sipXmedialib call flow graph uses 10ms frames and I am not sure what the implications are if I try to change this. The documentation seemed to indicate that a 20ms frame was recomended, but it didn't go into the consquences of using other frame sizes. We are going to use headsets

Hello Friends, I am trying to use speex-1.2beta3 version for echo cancelling. On my WinCE board I am using WaveIn/WaveOut functions to record and playback audio. I am receiving audio data on udp socket, then playing it on speaker using WaveOutWrite function. I registered callback to capture microphone data, then data chunk came from socket ( which I played on speaker) and data captured from

Hi Yes, it's absolutely unnecessary to use speex codec. You can encode the echo cancelled auido data with any codec you want. The Echo Canncelation API is here - http://www.speex.org/docs/api/speex-api-reference/group__SpeexEchoState. html I would advice you to look at speex_echo_cancellation function but you will have to sync playback and capture streams by yourself. I've used

Jean-Marc, BTW, the problem #1 is not unique to the speex echo canceller. It has also occurred on other ec's I've tried, most recently the CANEC ec from dspalgorithms.com. - Eric Scott > -----Original Message----- > From: Eric Scott > Sent: Thursday, July 28, 2005 9:11 AM > To: 'Jean-Marc Valin' > Cc: speex-dev@xiph.org > Subject: RE: [Speex-dev] Problems

I'm using Speex in Windows VoIP application and trying to implement echo cancellationI'm using waveInXXXX and waveOutXXXX API. I'm doing quite simple thing: After buffer is played (I get MM_WOM_DONE message) I'm just copying it's content to temporary playback buffer After buffer is recorded (I get MM_WIM_DONE message) I call speex_echo_cancellation(state, recorded_buf,

Hi I am using speex for cancelling echo.but i am not succeeded. I need echo cancellation in urgent.Please help m. Thanks in advance Devi