Paper Abstract and Keywords |
Presentation |
2012-12-14 10:40
Under-Determined Audio Source Separation Based on MAP Spectral Estimation Using Log-Spectral Prior Yasuaki Iwata (Nagoya Univ.), Tomohiro Nakatani, Masakiyo Fujimoto, Takuya Yoshioka (NTT CS Labs), Hirofumi Saito (Nagoya Univ.) EA2012-114 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Assuming speech to be non-stationary Gaussian process, maximum likelihood spectral estimation has been studied as an effective speech enhancement approach. Recently, to improve the estimation accuracy of this approach, we have proposed an extention of it, namely a maximum a posterior (MAP) estimation approach using pre-trained log-spectral priors, and showed its effectiveness. This paper newly applies this extention to a multi-channel Wiener filtering based undetermined blind source separation (BSS) technique proposed by Duong et al. This conventional method adopts the likelihood maximization approach for estimating the source spectra and the spatial correlation matrices for the Wiener filtering. The proposed method extends it by introducing the MAP estimation approach for estimating the source spectra, and improves the accuracy of the Wiener filtering. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
blind source separation / log-power spectrum / maximum a posteriori estimation / Gaussian mixture model / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 347, EA2012-114, pp. 29-34, Dec. 2012. |
Paper # |
EA2012-114 |
Date of Issue |
2012-12-06 (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) |
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EA2012-114 |
Conference Information |
Committee |
EA |
Conference Date |
2012-12-13 - 2012-12-14 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
National Institute of Informatics |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Blind signal processing, General topics |
Paper Information |
Registration To |
EA |
Conference Code |
2012-12-EA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Under-Determined Audio Source Separation Based on MAP Spectral Estimation Using Log-Spectral Prior |
Sub Title (in English) |
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Keyword(1) |
blind source separation |
Keyword(2) |
log-power spectrum |
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maximum a posteriori estimation |
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Gaussian mixture model |
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1st Author's Name |
Yasuaki Iwata |
1st Author's Affiliation |
Nagoya University (Nagoya Univ.) |
2nd Author's Name |
Tomohiro Nakatani |
2nd Author's Affiliation |
NTT Comunication Science Laboratories (NTT CS Labs) |
3rd Author's Name |
Masakiyo Fujimoto |
3rd Author's Affiliation |
NTT Comunication Science Laboratories (NTT CS Labs) |
4th Author's Name |
Takuya Yoshioka |
4th Author's Affiliation |
NTT Comunication Science Laboratories (NTT CS Labs) |
5th Author's Name |
Hirofumi Saito |
5th Author's Affiliation |
Nagoya University (Nagoya Univ.) |
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Speaker |
Author-1 |
Date Time |
2012-12-14 10:40:00 |
Presentation Time |
35 minutes |
Registration for |
EA |
Paper # |
EA2012-114 |
Volume (vol) |
vol.112 |
Number (no) |
no.347 |
Page |
pp.29-34 |
#Pages |
6 |
Date of Issue |
2012-12-06 (EA) |
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