Time-varying allpass filters using spectral-shaped noise for signal decorrelation in stereophonic acoustic echo cancellation

N Tangsangiumvisai,J.A Chambers,A.G Constantinides

doi:10.1109/icdsp.2002.1028325

Time-varying allpass filters using spectral-shaped noise for signal decorrelation in stereophonic acoustic echo cancellation

N Tangsangiumvisai, J.A Chambers + Show 1 more

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https://doi.org/10.1109/icdsp.2002.1028325

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Publication Date: Aug 12, 2019
Citations: 6	License type: cc-by-nc-nd

Affiliation: Chulalongkorn University, King's College Hospital, Imperial College London

#Stereophonic Acoustic Echo Cancellation #Real Speech Signals + Show 8 more

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Abstract

In this paper, a signal decorrelation technique is presented that aims to minimise the degradation on stereo signal perception, whilst alleviating the non-uniqueness problem in stereophonic acoustic echo cancellation (SAEC). The proposed technique is based on higher-order time-varying allpass filters (HO-TV-APF) utilising spectral-shaped noise, together with the interpolation method. The test results on real speech signals indicate improved performance in both objective and subjective manners.

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