## About G.168 and G.165Echo Cancellation Alogorithm

Started by in Echo Cancellation13 years ago 1 reply

Dear Guyz, I want to implement G.168 echo Cancellation algorithm but i have not found any where the implementation instructions.please...

## Question about the convergence of Fast Affine projection Algorithm

Started by in Echo Cancellation14 years ago

Hello, I'm programming the Fast Affine Projection for echo cancellation,I see thi= s article "Steven.L. Gay, and S. Tavathia, =E2=80=9CFast...

Hello, I'm programming the Fast Affine Projection for echo cancellation,I see thi= s article "Steven.L. Gay, and S. Tavathia, =E2=80=9CFast affine projection algorithm,=E2=80=9D in Pro= c. of the ICASSP, vol. V, pp. 3023-3026,1995"to do it.=20 for the white noise (as input signal), it converges but for the speech signal it does not, the answer is in paragraph below but I did not understa...

## Redundant or 2nd echo canceler in Line Echo Cancellation

Started by in Echo Cancellation14 years ago 2 replies

Hi, I would like to know if it is normal to include a 2nd redundant echo canceler algorithm for line echo cancellation. I came across brief...

Hi, I would like to know if it is normal to include a 2nd redundant echo canceler algorithm for line echo cancellation. I came across brief notes on the internet that suggested use of two echo cancelers in line echo cancellation. The additional echo canceler is enabled in case the primary echo canceler goes out of bounds (diverges). I could not find much useful information on this subject. ...

## Re: Power measurement

Started by in Echo Cancellation14 years ago

Hi Dhar and to other group members, the form of the exponential filter is not shown in your post. can you pleas= e re-post it again? and by...

Hi Dhar and to other group members, the form of the exponential filter is not shown in your post. can you pleas= e re-post it again? and by the way, what should be the gain factor of the rectangular sliding w= indow? I doubt that it is 1. and lastly, what measurement method must the detector do? is it the RMS met= hod specified in the recommendation? thanks to you all and have a goo...

## MC-Echo Cancellation using BSS, examples?

Started by in Echo Cancellation15 years ago 2 replies

Hello, I was wondering if anyone has any idea about MC-echo cancellation using BSS, and if there are any available demos or algorithms. I...

Hello, I was wondering if anyone has any idea about MC-echo cancellation using BSS, and if there are any available demos or algorithms. I found the ECoBliSS file of Schobben and Sommen, but i was wondering if there are any other examples. Also, does anyone know if it is available as a product in the market? Thanks

## Help for roles in LMS algo

Started by in Echo Cancellation15 years ago 1 reply

I am implementing a LMS adptive filter denoising system. And I got a noisy signal A, and also a noise signal B. The B is corrected with noise of...

I am implementing a LMS adptive filter denoising system. And I got a noisy signal A, and also a noise signal B. The B is corrected with noise of noisy signal A. y(n) = conj(W)* U(n); e(n) = d(n) - y(n); W(n+1) = W(n)+mu*U(n)*conj(e(n)) ? 1. Which signal should act as main input signal U,and which should act as the desired signal D? noisy or noise? why? can I exchange their roles? Ple

## echo cancellation

Started by in Echo Cancellation15 years ago 1 reply

hello everyone.. im stephanie a graduating student..and im doing a thesis about echo cancellation in communication by a neural network using the...

hello everyone.. im stephanie a graduating student..and im doing a thesis about echo cancellation in communication by a neural network using the LMS algorithm...i just want to ask help from you guys about how to delay a voice signal???how to delay this signal.. s=(1+0.2*sin(2*pi*fa*t)).*sin(2*pi*f*(1+0.02*cos(2*pi*fm*t)).*t); and then may i ask also an examp...

## Echp Path Transfer Function

Started by in Echo Cancellation16 years ago 1 reply

Hi all! Where can I get some typical echo path responses or transfer functions to test echo cancellation algorithms with?

Hi all! Where can I get some typical echo path responses or transfer functions to test echo cancellation algorithms with?

## NETWORK EC-LMS/RLS

Started by in Echo Cancellation16 years ago 5 replies

Hi All, I'm doin a project on NETWORK ECHO CANCELLATION and need help to choose the best ADAPTIVE ALGORITHM. Everywhere its said, RLS...

Hi All, I'm doin a project on NETWORK ECHO CANCELLATION and need help to choose the best ADAPTIVE ALGORITHM. Everywhere its said, RLS is the best adaptive algo as well the most complex and unstable.With the now available workholic DSP/FPGA can't we bet on RLS for the increased perfomance? or is still there an unknown force which prevents us from doin so?

## Simulating an echo canceller

Started by in Echo Cancellation16 years ago 2 replies

Hi! I am new to the subject. Could anyone tell me how to simulate an echo canceller? I mean, if I want to develop a new device, what software...

Hi! I am new to the subject. Could anyone tell me how to simulate an echo canceller? I mean, if I want to develop a new device, what software tools can I use to model it before it is implemented in hardware, say, on the DSP. Is it possible to use Matlab or other software for that purpose? Stanislav