Paper Abstract and Keywords |
Presentation |
2009-07-17 15:00
Comparison of Wavefront Synthesized by Directly-Aligned Multi-Point Controlled Wavefront Synthesis and Wave Field Synthesis Noriyoshi Kamado (Nara Inst. of Sci and Tech.), Haruhide Hokari, Shoji Shimada (Nagaoka Univ. of Tech.), Hiroshi Saruwatari, Kiyohiro Shikano (Nara Inst. of Sci and Tech.) EA2009-40 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, we address a comparative study
on Directly-Aligned Multi-Point Controlled Wavefront
Synthesis (DMCWS by Ohno et al.) and Wave Field Synthesis (WFS by Barkhout et al.)
for realization of high-accuracy sound reproduction system,
where amplitude, phase and attenuation characteristics
of the wavefronts generated by DWCWS and WFS are assessed.
First, in DMCWS, we can derive an optimal control line coordinate
based on a numerical analysis.
Next, the results of computer simulations
reveal that the wavefront of DMCWS has
wide availability in both spatial and frequency domains
with few amplitude and phase errors, especially
beyond the spatial aliasing frequency in WFS.
Finally we can point out that
the amplitude error of DMCWS has similar behavior to
well-known spatial decay approximation expression
of WFS; this implies an easiness in
handling the amplitude error estimation of DMCWS.
From these findings, we can conclude an advantageous
position of DMCWS compared with WFS. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
wavefront synthesis / wave field synthesis / multip-point control / attenuation error / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 136, EA2009-40, pp. 19-24, July 2009. |
Paper # |
EA2009-40 |
Date of Issue |
2009-07-10 (EA) |
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 |
EA2009-40 |
|