Time-varying allpass filters using spectral-shaped noise ....pdf (208.03 kB)
Time-varying allpass filters using spectral-shaped noise for signal decorrelation in stereophonic acoustic echo cancellation
conference contributionposted on 2010-01-08, 16:20 authored by N. Tangsangiumvisai, Jonathon Chambers, A.G. Constantinides
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.
- Mechanical, Electrical and Manufacturing Engineering
CitationTANGSANGIUMVISAI, N., CHAMBERS, J. and CONSTANTINIDES, A.G., 2002. Time-varying allpass filters using spectral-shaped noise for signal decorrelation in stereophonic acoustic echo cancellation. IN: IEEE 14th International Conference on Digital Signal Processing, 1-3 July, Volume 2, pp. 1273 - 1276
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