Echo Cancellation & Environment Calibration

Started by jeffhcliu in Echo Cancellation12 years ago

Hi everyone! Please allow me to start off by clarifying that I have very very little knowledge on the subjects of DSP and echo cancellation...

Hi everyone! Please allow me to start off by clarifying that I have very very little knowledge on the subjects of DSP and echo cancellation and please forgive me if I sound ignorant. I have tried to read up on them but I am still a bit unsure about where to start for what I want to do. Right now, I have implemented an automatic music composition application in Visual C++ Express Edition ...


disable tone detector

Started by msey...@yahoo.com in Echo Cancellation13 years ago 1 reply

dear all Hi i want to know what is disable tone detector and why is it use in echo canceller. thanks

dear all Hi i want to know what is disable tone detector and why is it use in echo canceller. thanks


Invitation to Workshop on Real-Time Digital Signal Processing, 5-6 June 2006

Started by "hez...@ieee.org" in Echo Cancellation13 years ago

Invitation to Workshop on Real-Time Digital Signal Processing, 5-6 June 2006. We are pleased to bring to your kind attention our forthcoming...

Invitation to Workshop on Real-Time Digital Signal Processing, 5-6 June 2006. We are pleased to bring to your kind attention our forthcoming workshop on REAL-TIME DIGITAL SIGNAL PROCESSING to be conducted by Professor Patrick Gaydecki from the University of Manchester: Workshop Dates: 5-6 June 2006 Time: 8.30 am to 4.30 pm Venue: Concorde Hotel, Shah Alam, MALAYSIA Course Brochure: ...


Estimating the Impulse Response of the room !!!

Started by abhishek agarwal in Echo Cancellation13 years ago 1 reply

Hi all, I'm trying to estimate the impulse response of the room by playing a 4 sec white noise speech file from one end of the room and...

Hi all, I'm trying to estimate the impulse response of the room by playing a 4 sec white noise speech file from one end of the room and recording it at the other end. I'm told to estimate the impulse response of the room by using Recursive Least Squares method. Please help how to get this done, any help in this regard will be greatly appreciated. Thanks, Abhishek Abhishek A...


Composite source signals

Started by jfa47 in Echo Cancellation13 years ago 2 replies

Hi: I am trying to make a composite source signal for test a echo canceler, but i can understand a some thinks. In the G.168 are...

Hi: I am trying to make a composite source signal for test a echo canceler, but i can understand a some thinks. In the G.168 are defined the expresion for pseudo noise signal (G.168 Page 53 C.3-1), but I don't know what are the values for W(k)? Thanks in advance Jeronimo


Please read - Looking for teachers of DSP

Started by Webmaster in Echo Cancellation13 years ago

I am creating a new discussion group for teachers of signal processing. The goal is to bring together as many (D)SP teachers as possible so if...

I am creating a new discussion group for teachers of signal processing. The goal is to bring together as many (D)SP teachers as possible so if they wish, they can exchange all kind of useful information, like for instance which book(s) they use to teach their class, their favorite web sites, matlab tutorials, labs, etc. I am requesting your help today to help me build a list of teachers th...


Line Echo Path

Started by zhan...@yahoo.com in Echo Cancellation14 years ago 1 reply

Hi All, Is there any tool avaiable in Windows platform that can decribe the line echo path? I like to check if the echo path change...

Hi All, Is there any tool avaiable in Windows platform that can decribe the line echo path? I like to check if the echo path change during the connection in the 2 wire to 4 wire hybrid. Since I am not the developper of EC library, I have no way to access the internal state and coefficient of EC, so I need a tool that can tell for example impluse response bas


LEM simulation

Started by mgprashanth in Echo Cancellation14 years ago 1 reply

1. Any one is having an software to simulate Loudspeaker-enclousure-microphone(LEM) or room accoustic ? 2. what are the algorithms we...

1. Any one is having an software to simulate Loudspeaker-enclousure-microphone(LEM) or room accoustic ? 2. what are the algorithms we use to simulate LEM? 3. anyone is having matalb/SCILAB code to simulate LEM ?


Special Announcement: GSPx 2005

Started by Webmaster in Echo Cancellation14 years ago

GSPx is the major (digital and analog) signal processing technology forum and product exposition covering DSPs, mixed-signal and analog ...

GSPx is the major (digital and analog) signal processing technology forum and product exposition covering DSPs, mixed-signal and analog products, EDA tools, software and applications. This year's event will cover the latest technology in video compression, cellular, software defined radio (SDR), multi-core/multiprocessors, and much more. Keynote Speakers:


echo simulation query using vc++

Started by shah...@yahoo.com in Echo Cancellation14 years ago 1 reply

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


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