Adaptive Echo Cancellation Combined with Delay Estimation

Zhi Ping Zhang; Xi Hong Wu

doi:10.4028/www.scientific.net/AMM.303-306.2072

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 303-306Adaptive Echo Cancellation Combined with Delay...

Adaptive Echo Cancellation Combined with Delay Estimation

Abstract:

This paper proposed an echo canceller to reduce the computational complexity of the long delay echo cancellation. Two adaptive filters were used for constructing this echo canceller. One was designed as a delay estimator, which used down-sampled sub-band signals to estimate the echo delay time. The other was designed as a short-tap filter to subtract the echo from the recorded signal with delay compensation. Experimental results showed that the output signal-to-noise ratio from the proposed canceller with low complexity is similar to that from the conventional canceller based on a long-tap filter.

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Periodical:

Applied Mechanics and Materials (Volumes 303-306)

Pages:

2072-2075

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.303-306.2072

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Online since:

February 2013

Authors:

Zhi Ping Zhang, Xi Hong Wu

Keywords:

Adaptive Filter, Delay Estimation, Echo Cancellation, Embedded System

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