QRD-based unconstrained optimal filtering for acoustic noise reduction

Authors:
Geert Rombouts;Marc Moonen
Affiliations:
KULeuven/ESAT-SCD(SISTA), Kasteelpark Arenberg 10, 3001 Heverlee, Belgium;KULeuven/ESAT-SCD(SISTA), Kasteelpark Arenberg 10, 3001 Heverlee, Belgium
Venue:
Signal Processing
Year:
2003

Citing 3
Cited 6

Adaptive filter theory (3rd ed.)

Adaptive filter theory (3rd ed.)
A microphone array processing technique for speech enhancement in a reverberant space

Speech Communication
GSVD-based optimal filtering for single and multimicrophone speech enhancement

IEEE Transactions on Signal Processing

Spatially pre-processed speech distortion weighted multi-channel Wiener filtering for noise reduction

Signal Processing
An integrated approach to acoustic noise and echo cancellation

Signal Processing
Frequency-domain criterion for the speech distortion weighted multichannel Wiener filter for robust noise reduction

Speech Communication
Robust adaptive time delay estimation for speaker localization in noisy and reverberant acoustic environments

EURASIP Journal on Applied Signal Processing
Frequency domain multi-channel noise reduction based on the spatial subspace decomposition and noise eigenvalue modification

Speech Communication
A combined multi-channel Wiener filter-based noise reduction and dynamic range compression in hearing aids

Signal Processing

Quantified Score

Hi-index	0.08

Visualization

Abstract

We describe a new adaptive filtering algorithm based upon QR-decomposition for optimal multichannel filtering with an "unknown" desired signal, as well as its application to multi-channel acoustic noise reduction. A recursively calculated adaptive filter then optimally estimates the speech component in a noisy signal. The complexity of this algorithm is about 7 times lower than that of existing related algorithms, which are mainly based upon GSVD-decompositions, while performance is kept at the same level. Finally, it is shown how a parameter can be introduced which can be tuned to tradeoff noise reduction for signal distortion.