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Paper Abstract and Keywords
Presentation 2005-10-21 13:00
A study on a perception of the speech-direction
Hiroki Takano, Haruhide Hokari, Shoji Shimada (Nagaoka Univ. of Tech.), Kiyoshi Sugiyama (Tokyo Insti. of Polytech.)
Abstract (in Japanese) (See Japanese page) 
(in English) Many studies have assessed talker sound location in
hands-free tele-conferences systems.
However, no study has examined auditory perception
with regard to speech-direction of the talker.
The purpose of this study is to identify the perceptional cues of the
speech-direction with no visual reference.
The auditory perception of speech-direction might be due to the
variation of transfer function from the talker's mouth to the center of
listener's head and the Interaural Level Difference(ILD) of the listener.
The transfer function and ILD are theoretically calculated and measured,
and two subjective assessment tests are carried out.
The results clarify that ILD is more important than the variation of
transfer function, and that ILD in the frontal vicinity of the talker yields good perception of speech-direction.
Keyword (in Japanese) (See Japanese page) 
(in English) hands-free tele-conference / perception of the speech-direction / variation of transfer function / ILD / directivity / / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 348, EA2005-63, pp. 37-42, Oct. 2005.
Paper # EA2005-63 
Date of Issue 2005-10-14 (EA) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee EA  
Conference Date 2005-10-20 - 2005-10-21 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2005-10-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on a perception of the speech-direction 
Sub Title (in English)  
Keyword(1) hands-free tele-conference  
Keyword(2) perception of the speech-direction  
Keyword(3) variation of transfer function  
Keyword(4) ILD  
Keyword(5) directivity  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroki Takano  
1st Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
2nd Author's Name Haruhide Hokari  
2nd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
3rd Author's Name Shoji Shimada  
3rd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
4th Author's Name Kiyoshi Sugiyama  
4th Author's Affiliation Tokyo Institute of Polytechnics (Tokyo Insti. of Polytech.)
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Speaker Author-1 
Date Time 2005-10-21 13:00:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2005-63 
Volume (vol) vol.105 
Number (no) no.348 
Page pp.37-42 
#Pages
Date of Issue 2005-10-14 (EA) 


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