In order that the speech recognition system might have a high performance in the noisy environment, the directional microphone arrays at the input of the system have been broadly investigated. The purpose of this study is to develop a new wide-band directional microphone system in view of advancing to an adaptive one afterwards. In the proposed system, three microphones are arranged on a straight line and the beamforming is accomplished in such a way that the output value of the middle microphone is added to the integrated value of the difference between two microphones at both sides. In this study, the signal processing of microphone outputs is implemented by using active RC circuits. Finally, the objective directivity can be experimentally obtained in wide frequency ranges required for the speech recognition.
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Masataka NAKAMURA, Katsuhito KOUNO, Toshitaka YAMATO, Kazuhiro SAKIYAMA, "Realization of Wide-Band Directivity with Three Microphones" in IEICE TRANSACTIONS on Fundamentals,
vol. E82-A, no. 4, pp. 619-625, April 1999, doi: .
Abstract: In order that the speech recognition system might have a high performance in the noisy environment, the directional microphone arrays at the input of the system have been broadly investigated. The purpose of this study is to develop a new wide-band directional microphone system in view of advancing to an adaptive one afterwards. In the proposed system, three microphones are arranged on a straight line and the beamforming is accomplished in such a way that the output value of the middle microphone is added to the integrated value of the difference between two microphones at both sides. In this study, the signal processing of microphone outputs is implemented by using active RC circuits. Finally, the objective directivity can be experimentally obtained in wide frequency ranges required for the speech recognition.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e82-a_4_619/_p
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@ARTICLE{e82-a_4_619,
author={Masataka NAKAMURA, Katsuhito KOUNO, Toshitaka YAMATO, Kazuhiro SAKIYAMA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Realization of Wide-Band Directivity with Three Microphones},
year={1999},
volume={E82-A},
number={4},
pages={619-625},
abstract={In order that the speech recognition system might have a high performance in the noisy environment, the directional microphone arrays at the input of the system have been broadly investigated. The purpose of this study is to develop a new wide-band directional microphone system in view of advancing to an adaptive one afterwards. In the proposed system, three microphones are arranged on a straight line and the beamforming is accomplished in such a way that the output value of the middle microphone is added to the integrated value of the difference between two microphones at both sides. In this study, the signal processing of microphone outputs is implemented by using active RC circuits. Finally, the objective directivity can be experimentally obtained in wide frequency ranges required for the speech recognition.},
keywords={},
doi={},
ISSN={},
month={April},}
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TY - JOUR
TI - Realization of Wide-Band Directivity with Three Microphones
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 619
EP - 625
AU - Masataka NAKAMURA
AU - Katsuhito KOUNO
AU - Toshitaka YAMATO
AU - Kazuhiro SAKIYAMA
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E82-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 1999
AB - In order that the speech recognition system might have a high performance in the noisy environment, the directional microphone arrays at the input of the system have been broadly investigated. The purpose of this study is to develop a new wide-band directional microphone system in view of advancing to an adaptive one afterwards. In the proposed system, three microphones are arranged on a straight line and the beamforming is accomplished in such a way that the output value of the middle microphone is added to the integrated value of the difference between two microphones at both sides. In this study, the signal processing of microphone outputs is implemented by using active RC circuits. Finally, the objective directivity can be experimentally obtained in wide frequency ranges required for the speech recognition.
ER -