Enhancement of Sound Sources Located within a Particular Area Using a Pair of Small Microphone Arrays
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概要
- 論文の詳細を見る
A method for extracting a sound signal from a particular area that is surrounded by multiple ambient noise sources is proposed. This method performs several fixed beamformings on a pair of small microphone arrays separated from each other to estimate the signal and noise power spectra. Noise suppression is achieved by applying spectrum emphasis to the output of fixed beamforming in the frequency domain, which is derived from the estimated power spectra. In experiments performed in a room with reverberation, this method succeeded in suppressing the ambient noise, giving an SNR improvement of more than 10dB, which is better than the performance of the conventional fixed and adaptive beamforming methods using a large-aperture microphone array. We also confirmed that this method keeps its performance even if the noise source location changes continuously or abruptly.
- （社）電子情報通信学会の論文
- 2008-02-01
著者
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HIOKA Yusuke
NTT Cyber Space Laboratories, NTT Corporation
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KATAOKA Akitoshi
Faculty of Science and Technology, Ryukoku University
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Furuya Ken'ichi
Ntt Cyber Space Laboratories Ntt Corporation
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Hioka Yusuke
Ntt Cyber Space Laboratories Ntt Corporation
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Kobayashi Kazunori
Ntt Cyber Space Laboratories Ntt Corporation
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Kataoka Akitoshi
NTT Cyber Space Laboratories
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Kataoka A
Faculty Of Science And Technology Ryukoku University
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