Dear Members I am Ganesh, working on Echo Cancellation for VoIP networks. While doing my simulations with a few different...

Dear Members I am Ganesh, working on Echo Cancellation for VoIP networks. While doing my simulations with a few different algorithms like LMS and NLMS, i didnt get a very satisfactory result. But when i used Leaky NLMS it works perfectly. Does anyone know w

Hi all, I am using NLMS complex Adaptive filter. In the coefficient update part, error is normalized with input signal power...

Hi all, I am using NLMS complex Adaptive filter. In the coefficient update part, error is normalized with input signal power and is multiplied with gain and reference signal. Input power is X X* (* complex conjugate). This includes addition of square of two numbers. My problem

I noticed the DC shifting upward of the filter(impulse response) sometimes? Anyone know what caused that and how to avoid it? ...

I noticed the DC shifting upward of the filter(impulse response) sometimes? Anyone know what caused that and how to avoid it? thanks Andrew

hello all, I have implemented a 16 bit fixed point (simulation on a PC) nlms based algorithm in c. While this seems to work great...

hello all, I have implemented a 16 bit fixed point (simulation on a PC) nlms based algorithm in c. While this seems to work great for audio input that is vocal, i seem to be running into problems when i use music (guitar and bass) inputs. are there any issues that i need to consider/

Hello Muk, Everybody gets to read something in some paper doc .... right ??? I just wanted to know which paper it is .........

Hello Muk, Everybody gets to read something in some paper doc .... right ??? I just wanted to know which paper it is ...... !!!! Regarding your query for Subband-nLMS ...you can search www.researchindex.com for papers. Peak search methods vary by algorithm impleme

hi to all i am working on acoustiv echo cancellation simulation based on vc++ using nlms algorithm. i got the result but not up to the...

hi to all i am working on acoustiv echo cancellation simulation based on vc++ using nlms algorithm. i got the result but not up to the mark.i had give wavfile wich has reverberation time of 50 ms. i had given pure wave file (without echo) to the filter block,it is estimating properly but not geting result.so can anybody help in that.what should be my filtertaps length? any suggest

Hi,all I have implement an AEC algorithm (Frequency Domain NLMS) on DSP (TI c5509), but when I test it in real room the ERLE is 16dB(with...

Hi,all I have implement an AEC algorithm (Frequency Domain NLMS) on DSP (TI c5509), but when I test it in real room the ERLE is 16dB(with white noise), will test by compositive speech source with line_in the ERLE is 25dB. But, I always see that some AEC product's ERLE can get 25dB-30dB, So I want to konw the method they test. 1,what's the test source. white noise or speech signal? ...