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Paper Abstract and Keywords
Presentation 2020-10-09 16:45
Using Pupillary Responses to Measure Cognitive Load of Japanese Synthetic Speech mixed with Noise
Mateusz Dubiel (UniStrath), Minoru Nakayama (Tokyo Tech.), Xin Wang (NII) HIP2020-51
Abstract (in Japanese) (See Japanese page) 
(in English) Pupillometry has recently been introduced as a method to evaluate cognitive workload of synthetic speech. Prior research conducted on English speech indicates that in noisy listening conditions, pupil dilations are significantly higher for synthetic speech as compared to natural speech.
We evaluated participants' pupil responses to Japanese speech (natural vs. synthetic) at three different signal-to-noise levels (-1dB, -3dB and -5dB). Pupil responses were evaluated in terms of temporal changes in pupil size and degree of pupil oscillations. We observed statistically significant differences in pupil sizes at the recall stage between each type of speech.
For pupil oscillations, we registered statistically significant differences in frequency power spectrum densities (PSDs). However, the results differed between conditions: at -3dB PDSs were higher for natural speech and at -5dB higher for synthetic speech.
Our investigation provides insights into cognitive implications of Japanese synthetic speech and expands the current evaluation method by analysing pupil oscillations.
Keyword (in Japanese) (See Japanese page) 
(in English) Perception / Synthetic Speech / Pupil response / Evaluation study / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 185, HIP2020-51, pp. 93-96, Oct. 2020.
Paper # HIP2020-51 
Date of Issue 2020-10-01 (HIP) 
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)
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Conference Information
Committee HIP  
Conference Date 2020-10-08 - 2020-10-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Eye Movement (including Accommodation and Pupil), Spatial Perception (Depth Perception, Motion Perception, etc.), etc. 
Paper Information
Registration To HIP 
Conference Code 2020-10-HIP 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Using Pupillary Responses to Measure Cognitive Load of Japanese Synthetic Speech mixed with Noise 
Sub Title (in English)  
Keyword(1) Perception  
Keyword(2) Synthetic Speech  
Keyword(3) Pupil response  
Keyword(4) Evaluation study  
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1st Author's Name Mateusz Dubiel  
1st Author's Affiliation The University of Strathclyde (UniStrath)
2nd Author's Name Minoru Nakayama  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
3rd Author's Name Xin Wang  
3rd Author's Affiliation National Institute of Informatics (NII)
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Speaker Author-2 
Date Time 2020-10-09 16:45:00 
Presentation Time 25 minutes 
Registration for HIP 
Paper # HIP2020-51 
Volume (vol) vol.120 
Number (no) no.185 
Page pp.93-96 
#Pages 4 
Date of Issue 2020-10-01 (HIP) 

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