Wednesday, July 23, 2014

Design Of an Echo Canceller using adaptive filter with LMS technique

In this particular project, we had introduced a concept of LMS (i.e. least mean square) in the adaptive filter designing. And finally, this particular adaptive filter is used in our communication system such as to cancel the generated ‘ECHO’, during process of communication between transmitter and receiver. It has been observed that this particular “Echo canceller” is very successful in reducing the undesired signal beside the upcoming speech signal form the transmitter end to the receiving end.

Beside the adaptive filter using the least mean square technique, one more component is also used within our design i.e. Vocoder. All these above discussed architecture is designed on MATLAB. 

Author - Rahul Bhardwaj
(Research Associate at Silicon Mentor

Acoustic echo cancellation setup using an adaptive filter