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Paper Abstract and Keywords
Presentation 2021-03-03 14:05
[Poster Presentation] A study of loudspeaker design for measuring near-field head-related transfer functions
Atsuro Ito, Kentaro Matsui, Shu Kitajima (NHK) EA2020-67 SIP2020-98 SP2020-32
Abstract (in Japanese) (See Japanese page) 
(in English) Head-related transfer functions (HRTFs) are acoustic transfer functions from a point source placed at arbitrary positions in space to the listening points. Especially, when a point source is placed at a position near listening points, such HRTFs are called near-field HRTFs. In that case, sound waves propagating from the sound source and received at listening points form spherical waves. Therefore, loudspeakers for near-field HRTFs measurement should radiate sound waves imitating spherical waves. In this paper, we considered requirements of loudspeakers for the near-field HRTFs measurement and manufactured test products based on that requirements. In addition, we selected an appropriate loudspeaker based on that requirements by measuring its radiation characteristics and frequency responses. Furthermore, we measured near-field HRTFs in horizontal plane using the loudspeaker to evaluate its suitability for the measurement. As a result, some unique characteristics of near-field HRTFs reported in previous researches are observed. From that results, we confirmed that the manufactured loudspeaker is suitable for the near-field HRTFs measurement.
Keyword (in Japanese) (See Japanese page) 
(in English) near-field head-related transfer functions / binaural reproduction / point source / frequency response / directivity / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 397, EA2020-67, pp. 45-50, March 2021.
Paper # EA2020-67 
Date of Issue 2021-02-24 (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 EA2020-67 SIP2020-98 SP2020-32

Conference Information
Committee EA US SP SIP IPSJ-SLP  
Conference Date 2021-03-03 - 2021-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech, Engineering/Electro Acoustics, Signal Processing, Ultrasonics, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2021-03-EA-US-SP-SIP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of loudspeaker design for measuring near-field head-related transfer functions 
Sub Title (in English)  
Keyword(1) near-field head-related transfer functions  
Keyword(2) binaural reproduction  
Keyword(3) point source  
Keyword(4) frequency response  
Keyword(5) directivity  
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Keyword(8)  
1st Author's Name Atsuro Ito  
1st Author's Affiliation NHK Science & Technology Research Laboratories (NHK)
2nd Author's Name Kentaro Matsui  
2nd Author's Affiliation NHK Science & Technology Research Laboratories (NHK)
3rd Author's Name Shu Kitajima  
3rd Author's Affiliation NHK Sapporo Station (NHK)
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Speaker Author-1 
Date Time 2021-03-03 14:05:00 
Presentation Time 90 minutes 
Registration for EA 
Paper # EA2020-67, SIP2020-98, SP2020-32 
Volume (vol) vol.120 
Number (no) no.397(EA), no.398(SIP), no.399(SP) 
Page pp.45-50 
#Pages 6 
Date of Issue 2021-02-24 (EA, SIP, SP) 

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