N. Tangsangiumvisai, J. A. Chambers
and A. G. Constantinides |
Abstract
In this paper,
a signal decorrelation technique is presented that aims to minimize 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-APFs) 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.