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Paper Abstract and Keywords
Presentation 2026-03-04 09:30
[Poster Presentation] NeuWORLD: A Neural Signal Processing Vocoder Based on Periodic, Aperiodic, and Filter
Yuto Ashida, Toru Nakashika (UEC) EA2025-140 SIP2025-160 SP2025-93
Abstract (in Japanese) (See Japanese page) 
(in English) The WORLD vocoder provides high controllability and efficiency by parameterizing speech into spectral envelopes, aperiodicity, and fo.
However, its output often suffers from noticeable signal-processing artifacts, falling short of the quality achieved by modern neural vocoders.
Although recent hybrids of neural networks and signal processing offer high-quality synthesis, they often lack the explicit controllability inherent in WORLD.
To bridge this gap, we introduce NeuWORLD, which incorporates an aliasing-free structure into the WORLD decoder framework.
Experimental results show that NeuWORLD outperforms the conventional WORLD vocoder in speech quality while maintaining real-time synthesis capabilities.
Keyword (in Japanese) (See Japanese page) 
(in English) Signal Processing Vocoder / Neural Vocoder / WORLD / Alias-Free / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 371, SP2025-93, pp. 391-395, March 2026.
Paper # SP2025-93 
Date of Issue 2026-02-23 (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 EA2025-140 SIP2025-160 SP2025-93

Conference Information
Committee SP EA SIP IPSJ-SLP  
Conference Date 2026-03-02 - 2026-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To SP 
Conference Code 2026-03-SP-EA-SIP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) NeuWORLD: A Neural Signal Processing Vocoder Based on Periodic, Aperiodic, and Filter 
Sub Title (in English)  
Keyword(1) Signal Processing Vocoder  
Keyword(2) Neural Vocoder  
Keyword(3) WORLD  
Keyword(4) Alias-Free  
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1st Author's Name Yuto Ashida  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Toru Nakashika  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2026-03-04 09:30:00 
Presentation Time 80 minutes 
Registration for SP 
Paper # EA2025-140, SIP2025-160, SP2025-93 
Volume (vol) vol.125 
Number (no) no.369(EA), no.370(SIP), no.371(SP) 
Page pp.391-395 
#Pages 5 
Date of Issue 2026-02-23 (EA, SIP, SP) 

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