| IEICE Technical Committee Submission System Conference Paper's Information |
Online Proceedings [Sign in] Tech. Rep. Archives |
| Go Top Page | Go Previous | [Japanese] / [English] |
| Paper Abstract and Keywords | ||
| Presentation | 2015-03-03 10:45 [Poster Presentation] Beamforming with reflector by using array manifold vector based on the FDTD method Hitomi Nakashima, Yoichi Haneda (UEC), Kenta Niwa (NTT)  EA2014-110 SIP2014-151 SP2014-173 |
|
| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recently, a microphone array with a reflector, which uses the acoustical information produced by the reflector such as reflections and diffractions, has been investigated to suppress the ambient noise. By using the reflection or diffraction information, as the differences between the transmission characteristics of the two closely located sound sources are enhanced, the microphone array can separate these two source signals. However, if a reflector with a complex shape is used, obtaining transmission characteristics that have to be set in advance, such as the array manifold vector, becomes complicated. A method to obtain the transmission characteristics is the measurement of the impulse responses; however, the measurements of the actual data are often cumbersome. Therefore, to determine the transmission characteristics, we considered performing a series of simulations based on the finite-difference time-domain (FDTD) method. We evaluated the noise suppression performance for the microphone array using the transmission characteristics created by the FDTD simulation for a parabola reflector and a circular disc. The results showed that it is possible to sufficiently suppress the noise by the proposed method, although the bandwidth was less than 2 kHz. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Microphone array / Beamforming / Parabolic reflector / FDTD method / ML method / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 473, EA2014-110, pp. 207-212, March 2015. | |
| Paper # | EA2014-110 | |
| Date of Issue | 2015-02-23 (EA, SIP, SP) | |
| ISSN | Print edition: ISSN 0913-5685 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 | EA2014-110 SIP2014-151 SP2014-173 |
|
| Conference Information | |
| Committee | SIP EA SP |
| Conference Date | 2015-03-02 - 2015-03-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2015-03-SIP-EA-SP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Beamforming with reflector by using array manifold vector based on the FDTD method |
| Sub Title (in English) | |
| Keyword(1) | Microphone array |
| Keyword(2) | Beamforming |
| Keyword(3) | Parabolic reflector |
| Keyword(4) | FDTD method |
| Keyword(5) | ML method |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hitomi Nakashima |
| 1st Author's Affiliation | The University of Electro-Communications (UEC) |
| 2nd Author's Name | Yoichi Haneda |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC) |
| 3rd Author's Name | Kenta Niwa |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 4th Author's Name | |
| 4th Author's Affiliation | () |
| 5th Author's Name | |
| 5th Author's Affiliation | () |
| 6th Author's Name | |
| 6th Author's Affiliation | () |
| 7th Author's Name | |
| 7th Author's Affiliation | () |
| 8th Author's Name | |
| 8th Author's Affiliation | () |
| 9th Author's Name | |
| 9th Author's Affiliation | () |
| 10th Author's Name | |
| 10th Author's Affiliation | () |
| 11th Author's Name | |
| 11th Author's Affiliation | () |
| 12th Author's Name | |
| 12th Author's Affiliation | () |
| 13th Author's Name | |
| 13th Author's Affiliation | () |
| 14th Author's Name | |
| 14th Author's Affiliation | () |
| 15th Author's Name | |
| 15th Author's Affiliation | () |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2015-03-03 10:45:00 |
| Presentation Time | 90 minutes |
| Registration for | EA |
| Paper # | EA2014-110, SIP2014-151, SP2014-173 |
| Volume (vol) | vol.114 |
| Number (no) | no.473(EA), no.474(SIP), no.475(SP) |
| Page | pp.207-212 |
| #Pages | 6 |
| Date of Issue | 2015-02-23 (EA, SIP, SP) |
[Return to Top Page]