Time-varying allpass filters using spectral-shaped noise for signal decorrelation in stereophonic acoustic echo cancellation
N. Tangsangiumvisai
Jonathon Chambers
A.G. Constantinides
2134/5767
https://repository.lboro.ac.uk/articles/conference_contribution/Time-varying_allpass_filters_using_spectral-shaped_noise_for_signal_decorrelation_in_stereophonic_acoustic_echo_cancellation/9557150
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.
2010-01-08 16:20:30
Acoustic signal processing
All-pass filters
Decorrelation
Echo suppression
Interpolation
Spectral analysis
Speech processing
Teleconferencing
Time-varying filters
Mechanical Engineering not elsewhere classified