NDLI: Linear filtering for noise reduction and interference rejection

Content Provider	IEEE Xplore Digital Library
Author	Souden, M. Benesty, J. Affes, S.
Copyright Year	2010
Description	Author affiliation: INRS- ÉMT, 800, de la Gauchetière Ouest, Suite 6900, Montréal, H5A 1K6, QC, Canada (Souden, M.; Benesty, J.; Affes, S.)
Abstract	We study the linearly constrained minimum variance (LCMV) and the minimum variance distortionless response (MVDR) filters when multiple interferers and unknown (ambient) noise coexist with a target speech signal. Precisely, the LCMV is designed to remove all the interference signals while preserving the desired speech and attempting to reduce the ambient noise components. The MVDR is simply formulated such that the overall ambient-noise-plus-interference are reduced while satisfying a distortionless constraint. We provide simplified expressions for both beamformers and show their relationship. Furthermore, we underline the limitations of the LCMV when the ambient noise is present. When the latter is absent, we also prove that the MVDR degenerates to the LCMV. Numerical examples are provided to support our study.
Starting Page	89
Ending Page	92
File Size	193905
Page Count	4
File Format	PDF
ISBN	9781424442959
ISSN	15206149
DOI	10.1109/ICASSP.2010.5496184
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-03-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Maximum likelihood detection Noise reduction Microphone arrays Speech enhancement Speech analysis Interference constraints Nonlinear filters Array signal processing Phased arrays Working environment noise minimum variance distortionless response (MVDR) interference rejection microphone array beamforming linearly constrained minimum variance (LCMV)
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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