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| Presentation | 2019-11-23 11:10 [Invited Talk] Velvet noise and frequency domain variants of Velvet noise -- The unexpected emergence of a strange signal forces us to revisit sounds and auditory perception -- Hideki Kawahara (Wakayama Univ.)  EA2019-65 EMM2019-93 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A sparse and random sequence of 1 and -1 sounds like noise. Moreover, it sounds smoother than white Gaussian noise and called "velvet noise." The first encounter with the velvet noise was a keynote by Valimaki of the APSIPA ASC meeting in 2017. This encounter and following discussions with him started the following studies on velvet noise and its variants. They finally led to an unexpected invention of frequency domain variants of velvet noise (FVN). By exchanging the time and frequency axes of the original velvet noise generation and introducing a very smooth and localized function made from a cosine series, it defines FVN. A unit FVN sounds like a noise burst. However, FVN is not a truncated noise. Its power spectrum is a constant value irrespective of frequency, and convolution with the time-reversed version of the FVN yields a unit impulse. In other words, a unit FVN is a TSP on the broader definition. The ever-expanding applications of FVN include speech synthesis, acoustic measurement, psychoacoustics and physiology of hearing, interactions between speech production and perception. Applications of FVN are growing wider than our expectations. This article tries to organize FVN's history, related and underlying topics, backgrounds, and tries to foresee the future of FVN applications. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | white noise / random number / cosine series / phase manipulation / time stretched pulse / nonlinear frequency warping / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 306, EA2019-65, pp. 69-74, Nov. 2019. | |
| Paper # | EA2019-65 | |
| Date of Issue | 2019-11-15 (EA, EMM) | |
| 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 | EA2019-65 EMM2019-93 |
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| Conference Information | |
| Committee | EA EMM |
| Conference Date | 2019-11-22 - 2019-11-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kanazawa Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Beginners Session] Engineering/Electro Acoustics, Content Processing, Digital Watermarking, Musical Acoustic, and Related Topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2019-11-EA-EMM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Velvet noise and frequency domain variants of Velvet noise |
| Sub Title (in English) | The unexpected emergence of a strange signal forces us to revisit sounds and auditory perception |
| Keyword(1) | white noise |
| Keyword(2) | random number |
| Keyword(3) | cosine series |
| Keyword(4) | phase manipulation |
| Keyword(5) | time stretched pulse |
| Keyword(6) | nonlinear frequency warping |
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| 1st Author's Name | Hideki Kawahara |
| 1st Author's Affiliation | Wakayama University (Wakayama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2019-11-23 11:10:00 |
| Presentation Time | 50 minutes |
| Registration for | EA |
| Paper # | EA2019-65, EMM2019-93 |
| Volume (vol) | vol.119 |
| Number (no) | no.306(EA), no.307(EMM) |
| Page | pp.69-74 |
| #Pages | 6 |
| Date of Issue | 2019-11-15 (EA, EMM) |
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