Click Here To Visit SIP Broker  

Go Back   Voxalot / SIP Broker Support Forums > Site Related > Site Information and Administration

Site Information and Administration Post your site related questions and requests here.

 
 
Reply
Thread Tools Display Modes
Unread 09-03-2010, 11:48 AM   #1
madong727
Junior Member
 
Join Date: Sep 2010
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
madong727 is on a distinguished road
Default echo cancellation

Hi:
I am developing an IP Phone on ARM(samsung 6410; CPU:667MHZ), and use lib mediastreamer.2.6.0 for audio
communication, but now the echo occur while talking. In the lib mediastreamer.2.6.0, I find a filter can
do echo Cancellation by calling lib speex. I active it to filter the collected voice, but the telephone
receiver can't hear any voice. Maybe I setup parameters wrong, the parameters are as follow:

int ec_tail_len = 100;
int ec_delay = 20;
int ec_framesize = 0;
if (use_ec) {
stream->ec=ms_filter_new(MS_NEW_SPEEX_EC_ID);
ms_filter_call_method(stream->ec,MS_FILTER_NEW_SET_SAMPLE_RATE,&pt->clock_rate);
//inec_tail_len = 100;
//ec_delay = ;
if (ec_tail_len!=0)
ms_filter_call_method(stream->ec,MS_ECHO_CANCELLER_SET_TAIL_LENGTH,&ec_tail_len );
if (ec_delay!=0)
ms_filter_call_method(stream->ec,MS_ECHO_CANCELLER_SET_DELAY,&ec_delay);
if (ec_framesize!=0)
ms_filter_call_method(stream->ec,MS_ECHO_CANCELLER_SET_FRAMESIZE,&ec_framesize) ;
}

Expecting anybody can give me some advices to cancel the hateful echo.
Best regards!
madong727 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Echo Problem on Inbound Calls Cyberian75 Voxalot Support 2 07-12-2009 06:23 PM
echo test ???????????????? thaer Voxalot Support 2 09-23-2008 09:12 PM
echo problem voip2007 Voxalot Support 1 07-21-2007 02:34 PM
echo using PAP2 with dialplan dougnash Voxalot Support 2 08-14-2006 11:22 AM
Echo Test - a bit LOUD?! ctylor Voxalot Support 4 05-02-2006 01:28 AM


All times are GMT. The time now is 10:19 AM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.