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QRD-based unconstrained optimal filtering for acoustic noise reduction
- Source :
-
Signal Processing . Sep2003, Vol. 83 Issue 9, p1889. 16p. - Publication Year :
- 2003
-
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. [Copyright &y& Elsevier]
- Subjects :
- *FILTERS & filtration
*MATHEMATICAL decomposition
*NOISE generators (Electronics)
Subjects
Details
- Language :
- English
- ISSN :
- 01651684
- Volume :
- 83
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Signal Processing
- Publication Type :
- Academic Journal
- Accession number :
- 10426843
- Full Text :
- https://doi.org/10.1016/S0165-1684(03)00107-5