Grid-based beamformer design for room-environment microphone arrays

Author

Ward, Darren B. ; Brandstein, Michael S.

Author_Institution

Sch. of Electr. Eng., New South Wales Univ., Canberra, ACT, Australia

fYear

1999

fDate

1999

Firstpage

23

Lastpage

26

Abstract

A new method is presented for speech acquisition in a room-environment using a microphone array. The technique involves dividing the room into several regions (called grids), and classifying each grid according to the acoustic source located within it. Based on this classification, array weights are found to pass signals from the chosen source grid while minimizing the response to so-called interference grids (that contain either interfering sources or strong reflections). Simulation results are presented to demonstrate the effectiveness of the proposed technique

Keywords

acoustic transducer arrays; architectural acoustics; array signal processing; microphones; noise abatement; speech processing; acoustic source; array weights; competing talkers rejection; deleterious environmental effects rejection; grid classification; grid-based beamformer design; interference grids; interfering sources; room-environment microphone arrays; simulation results; source grid; speech acquisition; strong reflections; Acoustic beams; Array signal processing; Australia; Educational institutions; Interference cancellation; Microphone arrays; Reverberation; Robustness; Sensor arrays; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Signal Processing to Audio and Acoustics, 1999 IEEE Workshop on

Conference_Location

New Paltz, NY

Print_ISBN

0-7803-5612-8

Type

conf

DOI

10.1109/ASPAA.1999.810840

Filename

810840