similar to: About echo cancelling

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,

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,

Thanks for your reply. I changed my code to: if (speex_preprocess_run(preprocess_state, shortPointer) == 1) { speex_encode_int(enc_state, shortPointer, &enc_bits); } In the mobile version of the software, compiled against the mobile build of Speech, I get 1 and 0 based on whether the speech is detected. In the version of the software compiled against the Win32 version of Speex,

This must be a simple issue, but I cannot figure it out. I want to use VAD, but I don't know how to check if the actual frame has voice in it or not. So, in my code, I do: int tmp = 1; speex_preprocess_ctl(preprocess_state, SPEEX_PREPROCESS_SET_VAD, &tmp); speex_preprocess_ctl(preprocess_state, SPEEX_PREPROCESS_SET_DENOISE, &tmp); then later, for each frame

Hi, I got the following problem with speex. Could you help me to resolve the following issue. Description: I am taking speech input from MIC storing in a buffer after that i will encode by using speex then decoding and sending to output(speakers). it is small demo project of speech encoding/decoding in VC++. I am reading the data from buffer in the following way where data is short[] type and

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

Hi, i have a weekly data for servers for 62 weeks. want to predict the cpu% for next 5 weeks.I am trying to forecast for many servers at once but with the code i am getting only one week of future forecast for all the servers. Also the week date for the predicted week is showing as the last week of the original data . Need help in two things How can i change the date for the predicted week, and

Hi I am trying to forecast for multiple server for CPU Utilization , But currently i am getting it for for one week , when ever i am trying to get more than one week it gives me error. Secondly in the one week forecast values i am getting the weekend date as the last week end in the original data set , where as it should be one week after that . Below is my code Let me know if anything else is

Hi, I wrote to a program looking at the api reference to pre-process noisy speech using SpeexPreprocess api. Code listing is the following: --------------------------------------- #include <stdio.h> #include <speex/speex_preprocess.h> #define FRAME_SIZE 160 #define SAMPLING_RATE 8000 int main(int argc, char **argv) { SpeexPreprocessState *preprocess_state =

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

> Is the following code correct for compressing audio? The output I get is so > extremely small, but what is more important: if I pass it through zlib, it > gets at least 50% smaller! JM> On regular data, gzip might get a 5% reduction, so I doubt you can get JM> 50% unless you're encoding zeros or doing something wrong... I think I'm doing something wrong :o) Don't know

In my app, the user can upload images. Rather than shoving the image data in the database, i want to put the filename and content type into the db, then rename the image with its record''s id number, and then save it into a local folder in my app folder. (hardcoded for now) All the details are being saved to the db ok, so as far as i know the "picture_file=" method is fine.

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

All, The implementation of SPEEX_PREPROCESS_GET_ECHO_STATE in preprocess.c seems to be broken. The value of the echo_state pointer is assigned to the stack variable rather than to the memory location pointed to by the stack variable. Code snippet from preprocess.c: case SPEEX_PREPROCESS_GET_ECHO_STATE: ptr = (void*)st->echo_state; break; It seems as though the code should

Hi, I am new to speex so please redirect me to some links if the question is repetative. Just for testing the echo canceller performance, I have added mdf,fftwrap,misc,kiss_fftr,kiss_fft source files to my project. Now In my multithread application when I receive packets from mice, I calls speex_echo_capture(echo_state, input_frame, output_frame,Youtput_frame) with input_frame as

This allows other boot loaders such as the Xen domain builder the opportunity to extract the ELF file. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: virtualization@lists.linux-foundation.org ---

This allows other boot loaders such as the Xen domain builder the opportunity to extract the ELF file. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: virtualization@lists.linux-foundation.org ---

I'm using resample.c from speex in my project, and was testing it by processing the same waveform twice, with a reset() call in the middle, as follows: short *input_data = read_waveform_as_linear(infileName, &rate, &num_samples, &num_channels); SpeexResamplerState *state = speex_resampler_init_frac(num_channels, in_rate, out_rate, in_rate, out_rate, quality, &error);