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| Presentation | 2020-08-07 13:25 Suppression of multiple noises with different directions of arrival using instantaneous spectrum subtraction Koki Takenaka, Kenji Ozawa (Grad School, Univ. of Yamanashi)  EA2020-15 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Studies on noise suppression using a microphone array and neural networks (NN) have been conducted. In this study, the output from the microphone array is converted into a spatio-temporal sound pressure distribution image, and the two-dimensional (2D) spectrum of the amplitude and phase obtained by the 2D fast Fourier transform is used for noise suppression. In addition, a system that can handle multiple noise sources is proposed and its performance is evaluated, which has been an issue in previous studies. The system was realized by observing the characteristics of the 2D spectra obtained from multiple sources and using the 2D spectra of two sources as the training data of NN to deal with them. As a result of computer simulations, the noise suppression of about $-13 sim -17$~dB for two noise sources and $-10 sim -17$~dB for three noise sources was obtained. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Microphone array / Two-dimensional spectrum / Neural network / Direction of arrival / Multiple noise suppression / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 128, EA2020-15, pp. 9-14, Aug. 2020. | |
| Paper # | EA2020-15 | |
| Date of Issue | 2020-07-31 (EA) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | EA2020-15 |
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| Conference Information | |
| Committee | EA ASJ-H |
| Conference Date | 2020-08-07 - 2020-08-07 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Psychological and Physiological Acoustics, and Related Topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2020-08-EA-H |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Suppression of multiple noises with different directions of arrival using instantaneous spectrum subtraction |
| Sub Title (in English) | |
| Keyword(1) | Microphone array |
| Keyword(2) | Two-dimensional spectrum |
| Keyword(3) | Neural network |
| Keyword(4) | Direction of arrival |
| Keyword(5) | Multiple noise suppression |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Koki Takenaka |
| 1st Author's Affiliation | Graduate School, University of Yamanashi (Grad School, Univ. of Yamanashi) |
| 2nd Author's Name | Kenji Ozawa |
| 2nd Author's Affiliation | Graduate School, University of Yamanashi (Grad School, Univ. of Yamanashi) |
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| Speaker | Author-1 |
| Date Time | 2020-08-07 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | EA |
| Paper # | EA2020-15 |
| Volume (vol) | vol.120 |
| Number (no) | no.128 |
| Page | pp.9-14 |
| #Pages | 6 |
| Date of Issue | 2020-07-31 (EA) |
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