Fast QRD-lattice-based unconstrained optimal filtering for acoustic noise reduction
We derive a fast QRD-least-squares lattice (QRD-LSL) based unconstrained optimal filtering algorithm for multichannel acoustic noise reduction. As known from the literature, the unconstrained optimal filtering approach is an alternative to the popular GSC beamforming, which does not rely on a priori...
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| Veröffentlicht in: | IEEE transactions on speech and audio processing 2005-11, Vol.13 (6), p.1130-1143 |
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| container_title | IEEE transactions on speech and audio processing |
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| creator | Rombouts, G. Moonen, M. |
| description | We derive a fast QRD-least-squares lattice (QRD-LSL) based unconstrained optimal filtering algorithm for multichannel acoustic noise reduction. As known from the literature, the unconstrained optimal filtering approach is an alternative to the popular GSC beamforming, which does not rely on a priori information and hence possesses improved robustness. The optimal filtering problem involved is special in that the desired response signal is not known explicitly. The derivation of the QRD-LSL algorithm is based on a significantly reorganized version of a QRD-RLS-based unconstrained optimal filtering scheme. Overall an order of magnitude complexity reduction is obtained without any performance penalty, which makes this new approach affordable for real time implementation. |
| doi_str_mv | 10.1109/TSA.2005.853202 |
| format | Article |
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As known from the literature, the unconstrained optimal filtering approach is an alternative to the popular GSC beamforming, which does not rely on a priori information and hence possesses improved robustness. The optimal filtering problem involved is special in that the desired response signal is not known explicitly. The derivation of the QRD-LSL algorithm is based on a significantly reorganized version of a QRD-RLS-based unconstrained optimal filtering scheme. 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| identifier | ISSN: 1063-6676 |
| ispartof | IEEE transactions on speech and audio processing, 2005-11, Vol.13 (6), p.1130-1143 |
| issn | 1063-6676 2329-9290 1558-2353 2329-9304 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Acoustic noise Adaptive filters Algorithms Applied sciences Array signal processing Background noise Communication system control Control system synthesis Derivation Detection, estimation, filtering, equalization, prediction Exact sciences and technology Filtering Filtration GSC beamforming Information, signal and communications theory Lattices Microphone arrays multichannel acoustic noise reduction Optimization QRD-least-squares lattice (QRD-LSL) Reduction Robustness Signal and communications theory Signal, noise Speech enhancement Telecommunications and information theory |
| title | Fast QRD-lattice-based unconstrained optimal filtering for acoustic noise reduction |
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