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Paper Abstract and Keywords
Presentation 2024-02-29 16:45
Multiple Lag Window Pairs for Estimation of Fundamental Frequency and Periodicity Measure
Michiki Koshimori (UEC), Shigeki Sagayama (UTokyo/UEC), Toru Nakashika (UEC) EA2023-75 SIP2023-122 SP2023-57
Abstract (in Japanese) (See Japanese page) 
(in English) Extending the main concept of modified autocorrelation method in LPC, we investigate lag windows, lag window pairs, and multi-lag window pairs as methods for estimating the fundamental frequency and periodicity measure from short-time speech signal spectra. A lag window is weakly applied to the autocorrelation function to eliminate unevenness in the valleys of the harmonic structure, while a lag window is applied strongly to eliminate the harmonic structure to obtain a spectral envelope, and the ratio of the two is calculated and inverse Fourier transform is performed. We will consider ways to improve the F0 estimation accuracy. In addition, since the distribution of F0 of the speech to be estimated is unknown, we will also describe a F0 estimation method that divides the band in which F0 candidates exist and uses multiple lag window pairs. Furthermore, we propose a method to obtain a periodicity measure, which is a measure for quantifying the periodicity of speech. Through evaluation experiments using a speech database, we evaluated the F0 estimation performance of the proposed method and the voiced/unvoiced decision performance using a periodicity measure. It demonstrated robustness and showed the possibility of becoming one of the basic methods in speech analysis. Voiced/unvoiced judgment using a periodicity measure shows accuracy comparable to the compared methods under some conditions, and voiced/unvoiced decision based on the lag window method using a single lag window is particularly effective for voices with high F0. The accuracy exceeded that of the comparative methods.
Keyword (in Japanese) (See Japanese page) 
(in English) Speech spectral envelope / fundamental frequency estimation / autocorrelation function / lag window / periodicity measure / sidelobes / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 403, SP2023-57, pp. 85-90, Feb. 2024.
Paper # SP2023-57 
Date of Issue 2024-02-22 (EA, SIP, SP) 
ISSN 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 EA2023-75 SIP2023-122 SP2023-57

Conference Information
Committee SIP SP EA IPSJ-SLP  
Conference Date 2024-02-29 - 2024-03-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2024-02-SIP-SP-EA-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multiple Lag Window Pairs for Estimation of Fundamental Frequency and Periodicity Measure 
Sub Title (in English)  
Keyword(1) Speech spectral envelope  
Keyword(2) fundamental frequency estimation  
Keyword(3) autocorrelation function  
Keyword(4) lag window  
Keyword(5) periodicity measure  
Keyword(6) sidelobes  
Keyword(7)  
Keyword(8)  
1st Author's Name Michiki Koshimori  
1st Author's Affiliation University of Electro-Communications (UEC)
2nd Author's Name Shigeki Sagayama  
2nd Author's Affiliation The University of Tokyo/University of Electro-Communications (UTokyo/UEC)
3rd Author's Name Toru Nakashika  
3rd Author's Affiliation University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2024-02-29 16:45:00 
Presentation Time 20 minutes 
Registration for SP 
Paper # EA2023-75, SIP2023-122, SP2023-57 
Volume (vol) vol.123 
Number (no) no.401(EA), no.402(SIP), no.403(SP) 
Page pp.85-90 
#Pages 6 
Date of Issue 2024-02-22 (EA, SIP, SP) 

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