| Paper Abstract and Keywords |
| Presentation |
2007-03-16 10:30
Extracting Sounds in a Target Area Surrounded by Ambient Noise Sources
Yusuke Hioka, Kazunori Kobayashi, Ken'ichi Furuya, Akitoshi Kataoka (NTT) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
A method for extracting sound signal from a particular area which is surrounded by multiple ambient noise sources is proposed. The method performs several fixed beamformings on a pair of small microphone arrays separated from each other to estimate the signal and noise power spectra. The signal extraction is realized by a nonlinear filter performed in the frequency domain, which is derived from the estimated power spectra.
From experiments in a room with reverberation, the method succeeds in suppressing the ambient noise to more than 10dB, which is a much better effect than that of the conventional fixed beamforming method using a large-aperture microphone array. Furthermore, we confirmed that the method robustly works against moving noise sources. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
microphone array / noise suppression / non-negative least square method / / / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 106, no. 607, EA2006-110, pp. 7-12, March 2007. |
| Paper # |
EA2006-110 |
| Date of Issue |
2007-03-09 (EA) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
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| Conference Information |
| Committee |
EA |
| Conference Date |
2007-03-16 - 2007-03-16 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
EA |
| Conference Code |
2007-03-EA |
| Language |
English (Japanese title is available) |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Extracting Sounds in a Target Area Surrounded by Ambient Noise Sources |
| Sub Title (in English) |
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| Keyword(1) |
microphone array |
| Keyword(2) |
noise suppression |
| Keyword(3) |
non-negative least square method |
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| 1st Author's Name |
Yusuke Hioka |
| 1st Author's Affiliation |
NTT Corporation (NTT) |
| 2nd Author's Name |
Kazunori Kobayashi |
| 2nd Author's Affiliation |
NTT Corporation (NTT) |
| 3rd Author's Name |
Ken'ichi Furuya |
| 3rd Author's Affiliation |
NTT Corporation (NTT) |
| 4th Author's Name |
Akitoshi Kataoka |
| 4th Author's Affiliation |
NTT Corporation (NTT) |
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| Speaker |
Author-1 |
| Date Time |
2007-03-16 10:30:00 |
| Presentation Time |
30 minutes |
| Registration for |
EA |
| Paper # |
EA2006-110 |
| Volume (vol) |
vol.106 |
| Number (no) |
no.607 |
| Page |
pp.7-12 |
| #Pages |
6 |
| Date of Issue |
2007-03-09 (EA) |