The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Este artigo descreve um novo método para estimar a direção de chegada (DOA) usando um sistema de arranjo de microfones não linear baseado em formação de feixe complementar. A formação de feixe complementar é baseada em dois tipos de formadores de feixe projetados para obter padrões de diretividade complementares entre si. Neste sistema, como o padrão de diretividade resultante é proporcional ao produto desses padrões de diretividade, o método proposto pode ser usado para estimar DOAs de 2(K-1) fontes sonoras com Kconjunto de microfones de elemento. Primeiro, experimentos de estimativa de DOA são realizados utilizando simulação computacional e dispositivos reais em ambientes acústicos reais. Os resultados esclarecem que a estimativa de DOA para duas fontes sonoras pode ser realizada pelo método proposto com dois microfones. Além disso, comparando as resoluções de estimativa de DOA pelo método proposto e pelo método convencional de mínima variância, podemos mostrar que o desempenho do método proposto é superior ao do método de mínima variância sob todas as condições reverberantes.
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Hidekazu KAMIYANAGIDA, Hiroshi SARUWATARI, Kazuya TAKEDA, Fumitada ITAKURA, Kiyohiro SHIKANO, "Direction of Arrival Estimation Using Nonlinear Microphone Array" in IEICE TRANSACTIONS on Fundamentals,
vol. E84-A, no. 4, pp. 999-1010, April 2001, doi: .
Abstract: This paper describes a new method for estimating the direction of arrival (DOA) using a nonlinear microphone array system based on complementary beamforming. Complementary beamforming is based on two types of beamformers designed to obtain complementary directivity patterns with respect to each other. In this system, since the resultant directivity pattern is proportional to the product of these directivity patterns, the proposed method can be used to estimate DOAs of 2(K-1) sound sources with K-element microphone array. First, DOA-estimation experiments are performed using both computer simulation and actual devices in real acoustic environments. The results clarify that DOA estimation for two sound sources can be accomplished by the proposed method with two microphones. Also, by comparing the resolutions of DOA estimation by the proposed method and by the conventional minimum variance method, we can show that the performance of the proposed method is superior to that of the minimum variance method under all reverberant conditions.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e84-a_4_999/_p
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@ARTICLE{e84-a_4_999,
author={Hidekazu KAMIYANAGIDA, Hiroshi SARUWATARI, Kazuya TAKEDA, Fumitada ITAKURA, Kiyohiro SHIKANO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Direction of Arrival Estimation Using Nonlinear Microphone Array},
year={2001},
volume={E84-A},
number={4},
pages={999-1010},
abstract={This paper describes a new method for estimating the direction of arrival (DOA) using a nonlinear microphone array system based on complementary beamforming. Complementary beamforming is based on two types of beamformers designed to obtain complementary directivity patterns with respect to each other. In this system, since the resultant directivity pattern is proportional to the product of these directivity patterns, the proposed method can be used to estimate DOAs of 2(K-1) sound sources with K-element microphone array. First, DOA-estimation experiments are performed using both computer simulation and actual devices in real acoustic environments. The results clarify that DOA estimation for two sound sources can be accomplished by the proposed method with two microphones. Also, by comparing the resolutions of DOA estimation by the proposed method and by the conventional minimum variance method, we can show that the performance of the proposed method is superior to that of the minimum variance method under all reverberant conditions.},
keywords={},
doi={},
ISSN={},
month={April},}
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TY - JOUR
TI - Direction of Arrival Estimation Using Nonlinear Microphone Array
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 999
EP - 1010
AU - Hidekazu KAMIYANAGIDA
AU - Hiroshi SARUWATARI
AU - Kazuya TAKEDA
AU - Fumitada ITAKURA
AU - Kiyohiro SHIKANO
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E84-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2001
AB - This paper describes a new method for estimating the direction of arrival (DOA) using a nonlinear microphone array system based on complementary beamforming. Complementary beamforming is based on two types of beamformers designed to obtain complementary directivity patterns with respect to each other. In this system, since the resultant directivity pattern is proportional to the product of these directivity patterns, the proposed method can be used to estimate DOAs of 2(K-1) sound sources with K-element microphone array. First, DOA-estimation experiments are performed using both computer simulation and actual devices in real acoustic environments. The results clarify that DOA estimation for two sound sources can be accomplished by the proposed method with two microphones. Also, by comparing the resolutions of DOA estimation by the proposed method and by the conventional minimum variance method, we can show that the performance of the proposed method is superior to that of the minimum variance method under all reverberant conditions.
ER -