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Instantaneous blind signal extraction using second order statistics


These file attachments have been under embargo and were made available to the public after the embargo was lifted on 24 August 2011.

Author: Bloemendal, B.B.A.J. · Van de Laar, J. · Sommen, P.C.W. (Univ. Eindhoven)
Type:Conference paper
Embargo lifted:2011-08-24
Institution: Philips Research
Source:IWAENC 2008: 11th International Workshop for Acoustic Echo and Noise Control, Seattle, USA, 14-17 September 2008; authors version
Identifier: MS 32.324
Keywords: blind signal extraction · blind signal processing · second order statistics
Rights: (c) The Author(s)


The ultimate goal of instantaneous blind signal extraction is to find one source out of an instantaneous mixture of many others, without, or with a minimum of, prior information. Extraction can be performed by first identifying the complete mixing system and subsequentlyinverting that system. The goal of this paper is to describe the problems behind blind extraction and to directly find the extracting solution, without first identifying the complete mixing system. The proposed method uses second order statistics to identify the extracting solution and can be applied to mixing problems with different kinds of temporal structure e.g. non-stationarity, coloredness.

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