similar to: FW: SPEEX_PREPROCESS_GET_ECHO_STATE broken

2006/11/2, Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>: > > Today I tried speex echo cancellation on my VoIP application running > > on a windows mobile based PDA (OMAP1510 168MHz). The result is > > disappointing: it takes 150-250 ms to do echo cancellation (by calling > > speex_echo_capture() ) for a 20 ms frame! > > Are you by any chance using an insane

I did the test on another PDA which runs XScale 416Mhz CPU, the EAC arithmetic could be done in 1ms, but for the previous PDA (TI OMAP 168Mhz), it take more than 100ms! Though EAC could run in time on the new PDA, it did no help to cancel the echo, here is my test scenario: Init echo_state: echo_state=speex_echo_state_init(160,1120); int tmp=8000;

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

Hi, We are using your speex codec in our VirtuvalClassRoom product. It's working good but we have problem using your echo canceller. Can you send me some code samples which use the echo cancelation? thanks suresh A Bring your gang together. Do your thing. Find your favourite Yahoo! group at http://in.promos.yahoo.com/groups/ -------------- next part -------------- An HTML

? hi all, i am using the Acoustic Echo Cancellation from "Speex 1.1.12 version" in my VOIP application. Is it that the frame length to be chosen should always be 20ms or can i have flexibility in chosing the frame lenght? on what parameters does the frame length choise depends? thank you all, Shri. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, We are experiencing a few problems with Speex AEC. We are using it to process audio data on a real time stream over IP with Speex codec (frame size = 320). We initialize the echo state like this : SpeexEchoState * echo_state; echo_state = speex_echo_state_init(320,512); int sr = 16000; speex_echo_ctl(echo_state, SPEEX_ECHO_SET_SAMPLING_RATE,&sr); We are not really sure about

Hi. I've implemented "echo cancel" to voip project. But it doesn't work well . (I cannot feel the enhancement with activated AGC) My encode settings : 1. frame size : 320 bytes. 2. sampling rate : 16000 Hz (WB) 3. mono echo state initialized like this : echo_state = speex_echo_state_init(framesize, framesize*16); and befor encode : speex_echo_cancel(echo_state,

Hello, i'm adding echo cancellation to my voip application, but when i call speex_echo_capture() or speex_echo_playback() causes an assertion failed, it seens that there is a delete in any where. i've encapsulated echo canceller in a class that storage the state and simply call the functions: void EchoCanceller::Playback(short *echo_frame) { speex_echo_playback(echo_state,

Hi Jean Marc, We are running the speex echo canceller code on a Windows Mobile smartphone using a TI OMAP 201MHz 850. We are making voip calls and audio is working without echo canceller code. Simply adding the following 2 functions whether the echo cancellation is wired in (ie we use the output frame ) or not performance becomes terrible. Note 2 separate threads are used to handle audio.

> Today's Topics: > > 1. AEC with WB mode (Jean-Christophe.Berge@etu.enseeiht.fr) > 2. Multiple frame encode and decode (Reza Fatahillah) > 3. cant link speex_echo.h (jesus) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 20 Sep 2006 08:46:03 +0200 (CEST) > From:

Hi, my VoIP system uses speex with framesize = 160 samples(20 ms) at 8khz, sending and receiving paquets of 1600 samples(200 ms). When I receive a packet, I buffered it (I have also tried with speex_echo_playback) before sending to the speaker. When I capture from microphone, I fist remove DC offset (I saw in OPAL sources) and then I call speex_echo_cancellation for every one of the 10

On Dec 3, 2007 1:24 PM, Stefan Reuther <streu@gmx.de> wrote: > John Miles wrote: > > What's wrong with a plain old .bat file, or even an NMAKE .mak file? > > Ship two files, debug.bat and release.bat, and call it good. > > > > It is best to leave project-file creation up to individual users, > > in my opinion. > > I second that. When I played around

Hi Folks, I am having trouble using speex_echo_cancel. As a starting point, I am using the testecho.c source code. I compiled the 1.2beta1 version. I have not tried any other versions of speex. The document says that the order of arguments to Speex_echo_cancel is (echo_state, input_frame, echo_frame, output_frame, residue) where "input_frame" is as captured from mic and

Hi, when I use preprocessor with AEC, VC++ alerts me about heap corruption. I have protected speex_echo_playback, speex_echo_capture and speex_preprocess_run with mutexes, to avoid echo_state being used at the same time, but it still happens. Any help about this ussue? Thank you.

Hello all. A few questions on using speex's echo cancellation, for clarifying: 1) I assume that the echo_frame in this method: speex_echo_playback(echo_state, echo_frame) is just raw "pcm_s16le" type bits/data? I'm a bit new to all this... 2) I assume from this thread: http://lists.xiph.org/pipermail/speex-dev/2009-March/007151.html that speex_echo_playback and

hi, I tried to encode the voice data read from AudioQueue and then decode it. There was nothing but rhythm left, it sounds like robot's voice, but I cannot recognize any word. The app was compiled by XCode 4.1. Speex 1.0.5 and 1.2.rc1 gave the same result. When compiling speex 1.0.5, I added them to Xcode project, set the Header Search Paths, then compiled successfully. When compiling speex

Hello all, Today I tried speex echo cancellation on my VoIP application running on a windows mobile based PDA (OMAP1510 168MHz). The result is disappointing: it takes 150-250 ms to do echo cancellation (by calling speex_echo_capture() ) for a 20 ms frame! I've defined the FIXED_POINT macro. Is there anyway to do some optimization? Nick

Hello all, I am trying out the echo cancellation of Speex (1.2beta2) on Windows XP. I use the Windows Media API (i.e. waveInOpen, waveOutOpen etc) for playback and capture, but I cannot make echo cancellation works in my use case. Here is a description of what I tried: (the sound is in 8kHz and 16 bits per sample, the frame size is 240, tail_length is long enough to cover the far end to near end

Lowell Kinzer <lkinzer@ucsd.education> wrote: > >At 07:30 AM 11/8/99 , James Roth wrote: >>Hello, >> >> I'm nearly finished with the process of upgrading a client's old Novell >>server to a Linux box with Samba. The only problem I've run into is >>setting the user's PATH environment variable. When I use

There were little changes when I activate "echo cancel" without AGC. And activating "echo cancel" with AGC results poor voice quality. The relationship between input frame and echo frame is written to "very important" in SpeeX 1.1.11.1 manual. And I use "previous decoded data" for echo frame. <<<<---- no problem??? I show you again my code