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Paper Abstract and Keywords
Presentation 2008-08-05 09:30
Auditory perception of speaker's facing angle
Hiroaki Kato, Hironori Takemoto, Ryouichi Nishimura (NICT/ATR)
Abstract (in Japanese) (See Japanese page) 
(in English) The ability to auditorily perceive the facing direction of a human speaker was assessed. A male speaker sat on a pivot chair in an anechoic chamber and spoke a short sentence (3.9 s to 6.0 s long) while facing one of eight azimuthal angles (0° (listener's direction), 45°, 90°, 135°, 180°, -135°, -90°, or -45°) or one of three elevation directions (0° (level), 45° (up), or -45° (down)). The azimuthal angle was set solely by turning the pivot chair. Twelve blindfolded listeners heard the spoken sentence at a distance of either 1.2 or 2.4 m from the speaker and were asked to indicate the speaker's facing angle. In separate sessions, the speaker changed angles while speaking and the listeners indicated the perceived direction of horizontal rotation (clockwise or counter-clockwise) or vertical rotation (upward or downward). The overall results showed that the listeners' average response errors were 23.5° for azimuth and 12.9° for elevation. The average correct-response rates for rotation direction (either horizontal or vertical) were equal to or more than 80%. Effective acoustic cues were then discussed on the basis of the transfer characteristics from the speaker's mouth to the listener's ears measured by the cross-spectral method using the speaker's own voice. The results finally suggested that potentially effective cues included but were not limited to the overall level, spectral tilt (for the front-back or up-down judgment), and interaural level difference (for the left-right judgment).
Keyword (in Japanese) (See Japanese page) 
(in English) Spatial Hearing / Three-Dimensional Sound / Auditory Perception / Speech Communications / Audible Facing Angle / / /  
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Conference Information
Committee EA  
Conference Date 2008-08-04 - 2008-08-05 
Place (in Japanese) (See Japanese page) 
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Paper Information
Registration To EA 
Conference Code 2008-08-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Auditory perception of speaker's facing angle 
Sub Title (in English)  
Keyword(1) Spatial Hearing  
Keyword(2) Three-Dimensional Sound  
Keyword(3) Auditory Perception  
Keyword(4) Speech Communications  
Keyword(5) Audible Facing Angle  
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Keyword(7)  
Keyword(8)  
1st Author's Name Hiroaki Kato  
1st Author's Affiliation National Institute of Information and Communications Technology/ATR Cognitive Information Science Laboratories (NICT/ATR)
2nd Author's Name Hironori Takemoto  
2nd Author's Affiliation National Institute of Information and Communications Technology/ATR Cognitive Information Science Laboratories (NICT/ATR)
3rd Author's Name Ryouichi Nishimura  
3rd Author's Affiliation National Institute of Information and Communications Technology/ATR Cognitive Information Science Laboratories (NICT/ATR)
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Speaker Author-1 
Date Time 2008-08-05 09:30:00 
Presentation Time 30 minutes 
Registration for EA 
Paper #  
Volume (vol) vol.108 
Number (no) no.179 
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