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
É proposta uma melhoria na estimativa de espectros de potência sonora localizados em uma área bidimensional específica. Anteriormente propusemos um método convencional que estima espectros de potência sonora usando múltiplos feixes fixos para enfatizar a fala localizada em uma área bidimensional específica. No entanto, o método tem uma desvantagem: o número de áreas onde as fontes sonoras activas estão localizadas deve ser restrito. Esta restrição torna o método menos eficaz quando muitas fontes de ruído localizadas em áreas diferentes estão ativas simultaneamente. Neste artigo, revelamos a causa desta restrição e determinamos o número máximo de áreas para as quais o método é capaz de estimar simultaneamente espectros de potência sonora. Em seguida, também introduzimos um procedimento para investigar áreas que incluem fontes sonoras ativas para reduzir o número de espectros de potência desconhecidos a serem estimados. A eficácia do método proposto é examinada por meio de avaliação experimental aplicada a sons gravados em ambiente prático.
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Yusuke HIOKA, Ken'ichi FURUYA, Yoichi HANEDA, Akitoshi KATAOKA, "Improving Power Spectra Estimation in 2-Dimensional Areas Using Number of Active Sound Sources" in IEICE TRANSACTIONS on Fundamentals,
vol. E94-A, no. 1, pp. 273-281, January 2011, doi: 10.1587/transfun.E94.A.273.
Abstract: An improvement of estimating sound power spectra located in a particular 2-dimensional area is proposed. We previously proposed a conventional method that estimates sound power spectra using multiple fixed beamformings in order to emphasize speech located in a particular 2-dimensional area. However, the method has one drawback that the number of areas where the active sound sources are located must be restricted. This restriction makes the method less effective when many noise source located in different areas are simultaneously active. In this paper, we reveal the cause of this restriction and determine the maximum number of areas for which the method is able to simultaneously estimate sound power spectra. Then we also introduce a procedure for investigating areas that include active sound sources to reduce the number of unknown power spectra to be estimated. The effectiveness of the proposed method is examined by experimental evaluation applied to sounds recorded in a practical environment.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E94.A.273/_p
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@ARTICLE{e94-a_1_273,
author={Yusuke HIOKA, Ken'ichi FURUYA, Yoichi HANEDA, Akitoshi KATAOKA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Improving Power Spectra Estimation in 2-Dimensional Areas Using Number of Active Sound Sources},
year={2011},
volume={E94-A},
number={1},
pages={273-281},
abstract={An improvement of estimating sound power spectra located in a particular 2-dimensional area is proposed. We previously proposed a conventional method that estimates sound power spectra using multiple fixed beamformings in order to emphasize speech located in a particular 2-dimensional area. However, the method has one drawback that the number of areas where the active sound sources are located must be restricted. This restriction makes the method less effective when many noise source located in different areas are simultaneously active. In this paper, we reveal the cause of this restriction and determine the maximum number of areas for which the method is able to simultaneously estimate sound power spectra. Then we also introduce a procedure for investigating areas that include active sound sources to reduce the number of unknown power spectra to be estimated. The effectiveness of the proposed method is examined by experimental evaluation applied to sounds recorded in a practical environment.},
keywords={},
doi={10.1587/transfun.E94.A.273},
ISSN={1745-1337},
month={January},}
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TY - JOUR
TI - Improving Power Spectra Estimation in 2-Dimensional Areas Using Number of Active Sound Sources
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 273
EP - 281
AU - Yusuke HIOKA
AU - Ken'ichi FURUYA
AU - Yoichi HANEDA
AU - Akitoshi KATAOKA
PY - 2011
DO - 10.1587/transfun.E94.A.273
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E94-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2011
AB - An improvement of estimating sound power spectra located in a particular 2-dimensional area is proposed. We previously proposed a conventional method that estimates sound power spectra using multiple fixed beamformings in order to emphasize speech located in a particular 2-dimensional area. However, the method has one drawback that the number of areas where the active sound sources are located must be restricted. This restriction makes the method less effective when many noise source located in different areas are simultaneously active. In this paper, we reveal the cause of this restriction and determine the maximum number of areas for which the method is able to simultaneously estimate sound power spectra. Then we also introduce a procedure for investigating areas that include active sound sources to reduce the number of unknown power spectra to be estimated. The effectiveness of the proposed method is examined by experimental evaluation applied to sounds recorded in a practical environment.
ER -