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| Presentation | 2009-03-13 15:15 Chord Estimation by a Probabilistic Model that Represents a Correlation of Simultaneous Tones Keiko Teramura (Nara Inst. of Sci and Tech.), Shin-ichi Maeda, Shin Ishii (Kyoto Univ.)  NC2008-173 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recent research in music retrieval and recommendation requires a rich musical feature set in order to analyze the contents more deeply. One of the most important musical features is chord. Chord is determined by the pattern of the simultaneous tones, but is also dependent on the previous and the following notes. Raphael, et al., (2003) proposed to use a hidden Markov model to represent the temporal correlation. However, their model could not represent the real state duration well, that is, the same chord tends to continue and frequently transits to the other chord synchronizing with the rhythm. Moreover, the model ignores the correlation of simultaneous tones, and assumes that the chord probability is determined independently of the presence of other notes. In this study, we propose a new chord estimation model, in our model, the transition probability is represented by a semi-Markov model, which can consider the periodicity of the rhythm, and the observation probability is represented by a Boltzmann machine, which can represent the correlation of simultaneous tones. The experimental results show that our model yields the higher estimationaccuracy of the chord than the existing study. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Music / Chord estimation / Semi-Markov model / Boltzmann Machine / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 480, NC2008-173, pp. 411-416, March 2009. | |
| Paper # | NC2008-173 | |
| Date of Issue | 2009-03-04 (NC) | |
| 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 | NC2008-173 |
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| Conference Information | |
| Committee | NC MBE |
| Conference Date | 2009-03-11 - 2009-03-13 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tamagawa Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2009-03-NC-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Chord Estimation by a Probabilistic Model that Represents a Correlation of Simultaneous Tones |
| Sub Title (in English) | |
| Keyword(1) | Music |
| Keyword(2) | Chord estimation |
| Keyword(3) | Semi-Markov model |
| Keyword(4) | Boltzmann Machine |
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| 1st Author's Name | Keiko Teramura |
| 1st Author's Affiliation | Nara Institute of Science and Technology (Nara Inst. of Sci and Tech.) |
| 2nd Author's Name | Shin-ichi Maeda |
| 2nd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 3rd Author's Name | Shin Ishii |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
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| Speaker | Author-1 |
| Date Time | 2009-03-13 15:15:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2008-173 |
| Volume (vol) | vol.108 |
| Number (no) | no.480 |
| Page | pp.411-416 |
| #Pages | 6 |
| Date of Issue | 2009-03-04 (NC) |
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