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Robust adaptive beamforming algorithm using instantaneous direction of arrival with enhanced noise suppression capability

Yoon, Byung-Jun and Tashev, Ivan and Acero, Alex (2007) Robust adaptive beamforming algorithm using instantaneous direction of arrival with enhanced noise suppression capability. In: IEEE International Conference on Acoustics, Speech and Signal Processing, 2007 (ICASSP 2007), Honolulu, HI, 15-20 April 2007. Vol.1. IEEE , Piscataway, NJ, I-133-I-136. ISBN 1424407281. http://resolver.caltech.edu/CaltechAUTHORS:YOOicassp07a

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Abstract

In this paper, we propose a novel adaptive beamforming algorithm with enhanced noise suppression capability. The proposed algorithm incorporates the sound-source presence probability into the adaptive blocking matrix, which is estimated based on the instantaneous direction of arrival of the input signals and voice activity detection. The proposed algorithm guarantees robustness to steering vector errors without imposing ad hoc constraints on the adaptive filter coefficients. It can provide good suppression performance for both directional interference signals as well as isotropic ambient noise. For in-car environment the proposed beamformer shows SNR improvement up to 12 dB without using an additional noise suppressor.


Item Type:Book Section
Additional Information:© 2007 IEEE. Reprinted with Permission. Publication Date: 15-20 April 2007. Posted online: 2007-06-04.
Subject Keywords:Array Signal Processing; Adaptive Arrays; Speech Enhancement; Generalized Sidelobe Canceller (GSC); Instantaneous Direction of Arrival (IDOA)
Record Number:CaltechAUTHORS:YOOicassp07a
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:YOOicassp07a
Alternative URL:http://dx.doi.org/10.1109/ICASSP.2007.36663
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9712
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:10 Mar 2008
Last Modified:26 Dec 2012 09:51

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