About: A two-stage MMSE beamformer for underdetermined signal separation

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About: A two-stage MMSE beamformer for underdetermined signal separation Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=R2AScTwajtiw8IC62ji&page=1&doc=1
Description	Blind separation of underdetermined instantaneous mixtures is a popular solution to inverse problems encountered in audio or biomedical applications where the number of sources exceeds the number of sensors. There are two non-equivalent tasks: to identify the mixing matrix and to separate the original sources. In this paper, we focus on the latter task by proposing a novel beamformer that minimizes the theoretical mean square error distance between the separated and original signals. The beamformer has two stages: one for the estimation of signals and one for their refinement. Within the former stage, the signals are assumed to be random and locally stationary, while the latter stage is based on a semi-deterministic model. The experiments prove superior performance of the proposed method compared to conventional MMSE beamforming. Blind separation of underdetermined instantaneous mixtures is a popular solution to inverse problems encountered in audio or biomedical applications where the number of sources exceeds the number of sensors. There are two non-equivalent tasks: to identify the mixing matrix and to separate the original sources. In this paper, we focus on the latter task by proposing a novel beamformer that minimizes the theoretical mean square error distance between the separated and original signals. The beamformer has two stages: one for the estimation of signals and one for their refinement. Within the former stage, the signals are assumed to be random and locally stationary, while the latter stage is based on a semi-deterministic model. The experiments prove superior performance of the proposed method compared to conventional MMSE beamforming. (en)
Title	A two-stage MMSE beamformer for underdetermined signal separation A two-stage MMSE beamformer for underdetermined signal separation (en)
skos:prefLabel	A two-stage MMSE beamformer for underdetermined signal separation A two-stage MMSE beamformer for underdetermined signal separation (en)
skos:notation	RIV/46747885:24220/13:#0002868!RIV14-GA0-24220___
http://linked.open...avai/predkladatel	Fakulta mechatroniky, informatiky a mezioborových studií
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP103/11/1947)
http://linked.open...iv/cisloPeriodika	Vol. 20, No. 12, Dec. 2013
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Koldovský, Zbyněk
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Technická univerzita v Liberci / Fakulta mechatroniky, informatiky a mezioborových studií
http://linked.open...dnocenehoVysledku	59174
http://linked.open...ai/riv/idVysledku	RIV/46747885:24220/13:#0002868
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	blind source separation (en)
http://linked.open.../riv/klicoveSlovo	blind source separation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[3E359C242881]
http://linked.open...i/riv/nazevZdroje	IEEE SIGNAL PROCESSING LETTERS
http://linked.open...in/vavai/riv/obor	JC
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Methods of Latent Variable Analysis in Blind Speech and Audio Processing
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	Dec. 2013
http://linked.open...iv/tvurceVysledku	Koldovský, Zbyněk Tichavský, P. Cichocki, A. Phan, A. H.
http://linked.open...ain/vavai/riv/wos	000326120300001
issn	1070-9908
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1109/LSP.2013.2285932
http://localhost/t...ganizacniJednotka	24220

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