Frequency-domain steering for negative beamformers in speech enhancement and directional source separation

Author

Gómez, P. ; Álvarez, A. ; Martinez, R. ; Nieto, V. ; Rodellar, K.

Author_Institution

Fac. de Inf., Univ. Politecnica de Madrid, Spain

Volume

2

fYear

2001

fDate

6-9 May 2001

Firstpage

289

Abstract

Negative beamformers are well known for their high angular selectivity, which makes them suitable for speech enhancement and directional source separation. A limitation to the applicability of negative beamformers is the steering problem. A new technique for scanning the whole frequency range of interest is shown based on a nonlinear mapping function from angular positions to steering factors. The effects of this technique in treating narrow- and broad-band sources are studied

Keywords

array signal processing; speech enhancement; tracking; broadband sources; directional source separation; frequency range scanning; frequency-domain steering; high angular selectivity; narrowband sources; negative beamformers; nonlinear mapping function; speech enhancement; wideband signal tracking; Electronic mail; Frequency; Loudspeakers; Microphone arrays; Source separation; Speech enhancement; Speech processing; Speech recognition; Transfer functions; User interfaces;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921064

Filename

921064