Time-varying allpass filters using spectral-shaped noise for signal decorrelation in stereophonic acoustic echo cancellation
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) - Tập 2 - Trang 1273-1276 vol.2
Tóm tắt
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.
Từ khóa
#Decorrelation #Frequency #Delay #Signal processing #Acoustic noise #Adaptive filters #Equations #Computational complexity #Low-frequency noise #BasebandTài liệu tham khảo
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