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Paper Abstract and Keywords
Presentation 2025-06-13 13:20
[Poster Presentation] Improving Speaker Similarity in Speech Synthesis for Glossectomy Patients Using a Parallel Corpus of Healthy and Dysarthric Speech from Non-Target Speakers
Masayori Okamura, Masanobu Abe, Sunao Hara (Okayama Univ.) SP2025-5
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, we investigate speech synthesis for glossectomy patients using less than one minute of disordered speech from the target speaker. The proposed method performs speaker adaptation using not only the target speaker's disordered speech but also a parallel corpus of healthy and disordered speech from non-target speakers. This approach enables the synthesis of speech with high clarity and speaker similarity, even when only a small amount of disordered speech from the target speaker is available. Furthermore, we examine how the utilization of the parallel corpus contributes to the improvement of speaker similarity and phonetic clarity in the synthesized speech. We evaluate the effect of using the parallel corpus on speaker similarity and phonetic clarity of synthesized speech, considering the diversity of speech content and speakers. The evaluation shows that the proposed method improves both the speaker similarity MOS and character error rate (CER) of the synthesized speech, compared to the conventional method. In addition, the visualization results of the distribution of speaker embeddings show that the speaker encoders learned by the proposed method bring the speaker features of healthy and disordered speech closer together.
Keyword (in Japanese) (See Japanese page) 
(in English) Text-to-Speech / Speaker Adaption / Articulation Disorder / Few-shot Speech Synthesis / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 74, SP2025-5, pp. 22-27, June 2025.
Paper # SP2025-5 
Date of Issue 2025-06-06 (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 SP2025-5

Conference Information
Committee SP IPSJ-SLP IPSJ-MUS  
Conference Date 2025-06-13 - 2025-06-14 
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 2025-06-SP-SLP-MUS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improving Speaker Similarity in Speech Synthesis for Glossectomy Patients Using a Parallel Corpus of Healthy and Dysarthric Speech from Non-Target Speakers 
Sub Title (in English)  
Keyword(1) Text-to-Speech  
Keyword(2) Speaker Adaption  
Keyword(3) Articulation Disorder  
Keyword(4) Few-shot Speech Synthesis  
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1st Author's Name Masayori Okamura  
1st Author's Affiliation Okayama University (Okayama Univ.)
2nd Author's Name Masanobu Abe  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Sunao Hara  
3rd Author's Affiliation Okayama University (Okayama Univ.)
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Speaker Author-1 
Date Time 2025-06-13 13:20:00 
Presentation Time 140 minutes 
Registration for SP 
Paper # SP2025-5 
Volume (vol) vol.125 
Number (no) no.74 
Page pp.22-27 
#Pages 6 
Date of Issue 2025-06-06 (SP) 

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