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ICASSP
2008
IEEE

Identification of linear systems with adaptive control of the cross-multiplicative transfer function approximation

11 years 6 months ago
Identification of linear systems with adaptive control of the cross-multiplicative transfer function approximation
In this paper, we extend the cross-multiplicative transfer function (CMTF) approach for improved system identiļ¬cation in the shorttime Fourier transform (STFT) domain. The proposed algorithm adaptively controls the number of cross-terms in the CMTF approximation to achieve the minimum mean-square error (mmse) at each iteration. A small number of cross-terms is initially used to achieve fast convergence, and as the adaptation process proceeds, the algorithm gradually increases this number to enhance the steady-state performance. When compared to the conventional multiplicative transfer function (MTF) approach, the resulting algorithm achieves a substantial improvement in steady-state performance, without compromising for slower convergence. Experimental results validate the theoretical derivations and demonstrate the advantage of the proposed approach to acoustic echo cancellation.
Yekutiel Avargel, Israel Cohen
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICASSP
Authors Yekutiel Avargel, Israel Cohen
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