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Robuston methods for stable statistical signal processing: principles and application to nonstationary signal estimation

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3 Author(s)
Hlawatsch, F. ; Inst. of Commun. & Radio-Frequency Eng., Vienna Univ. of Technol., Austria ; Matz, G. ; Jachan, M.

We introduce a reduced-detail paradigm for nonstationary statistical signal processing with enhanced performance. Time-frequency localized subspace signal components (called robustons) are used as atomic entities for statistical signal modeling and processing. Robuston signal processing employs special time-varying filters that allow an efficient on-line implementation, and statistical signal descriptors that can be estimated in a stable manner by means of intra-subspace averaging. We develop the principles of robuston signal processing and consider optimal nonstationary signal estimation as a specific application. The performance advantages of the resulting "robuston Wiener filters" are assessed by means of simulations.

Published in:

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on  (Volume:6 )

Date of Conference:

6-10 April 2003