Abstract
In this paper, the basic emphasis is on implementation of a new scheme of noise and echo cancellation from speech signals using adaptive filtering techniques. The proposed model can be divided into two major parts: acoustic echo canceller and background noise canceller; both parts are kept independent of each other so that time-variance in background noise canceller does not affect the echo canceller. Echo cancellation is done by correlating far-end echo with input signal and the core of noise cancellation of this scheme lies in cascading technique for reconstruction of noise.

Muhammad Saad Nawaz, Mansoor Khan. (2013) A New Improved Scheme for Combined Reduction of Acoustic Echo and Background Noise using NLMS Filters, Journal of Space Technology , Volume 3, Issue 3.
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