RE: Peak search doubts.....

Started by Dharmendra Lingaiah in Echo Cancellation20 years ago 4 replies

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


Re---Training sequences in hybrid echo cancellers

Started by Sudarini Pushparajah in Echo Cancellation20 years ago

Sorry, to let me make this more clear. To use a white training sequnece in the absence of DT. ...

Sorry, to let me make this more clear. To use a white training sequnece in the absence of DT. --------------------------------------------------------------------------- Hi, I understand that this echocancel group consist of people who are involved in compiling the ITU-G


What the difference between the cross-talk and echo-cancellation?

Started by chenweigian in Echo Cancellation20 years ago 4 replies

I read about gigabit ethernet. They seems very similar. The echo is just what to you emit and cross-talk is emitted by your...

I read about gigabit ethernet. They seems very similar. The echo is just what to you emit and cross-talk is emitted by your neighbor. So, in this case, can echo-cancellation tech. be used for cross-talk elimination?


Acoustic Echo Canceller Source Code

Started by shiv8groups in Echo Cancellation20 years ago 1 reply

Dear all, I am working on a project for implementing Acoustic Echo Controller on a DSP Platform. I have studied standards...

Dear all, I am working on a project for implementing Acoustic Echo Controller on a DSP Platform. I have studied standards (G.167), and enough of documents for algorithms involved and all. Now to proceed for implementation I am looking for a Source Code, or any ear


NLP algorithm

Started by suvra,sekhar in Echo Cancellation20 years ago 1 reply

Dear all, Can anyone of you help me in getting an algorithm to  determine the threshold of the NLP of an echo...

Dear all, Can anyone of you help me in getting an algorithm to  determine the threshold of the NLP of an echo canceller


Double Talk Detector

Started by Anonymous in Echo Cancellation20 years ago 8 replies

Hello friends, I am working on Acoustic echo cancelletion. I am facing problems in selecting DTD(Double Talk Detector). In...

Hello friends, I am working on Acoustic echo cancelletion. I am facing problems in selecting DTD(Double Talk Detector). In Acoustic case Giegels' algorithm does not work, i have tried algorithms based on far and near end energy estimation but their results varies drasti


Echo path models

Started by Anonymous in Echo Cancellation20 years ago 2 replies

Hi everybody, I am new at Echo cancellation and have my final year engineering project in the field of acoustic echo cancellation....

Hi everybody, I am new at Echo cancellation and have my final year engineering project in the field of acoustic echo cancellation. I wantd to know if there are any general 'echo path' models available that I could use to test my algorithms and review there performance? I have been


mips problem??

Started by akash damodar sureka in Echo Cancellation20 years ago 3 replies

hello everyone, i am working on echo cancellation. i have completed the g.165 and g.168 complaince echo canceller. can...

hello everyone, i am working on echo cancellation. i have completed the g.165 and g.168 complaince echo canceller. can somebody tell me how much mips does normal echo canceller takes and which algorithm. is there any technique to reduce mips in lms or block update


phase-reversed ANSam tone

Started by Sheng Mou in Echo Cancellation20 years ago 2 replies

Hello All, Does anyone know where I can find the tool/data of the modified answer tone (ANSam) with phase-reversal specified in...

Hello All, Does anyone know where I can find the tool/data of the modified answer tone (ANSam) with phase-reversal specified in ITU-T V.8? I'm currently working on a tone disabler which is a part of the echo canceller and I need the ANSam to test it. Thanks,


Locating the echo...

Started by Sudarini Pushparajah in Echo Cancellation20 years ago 1 reply

Hi, I am working on a time-domain echo canceller project. I found out that in network echo cancellers, the delay is significant ...

Hi, I am working on a time-domain echo canceller project. I found out that in network echo cancellers, the delay is significant while the active echo path is small (16ms). However, to model the entire echo path (delay + active region) a large number of filter taps is required.


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