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Conference Paper

Perceptual Evaluation of Static Binaural Sound Synthesis

Authors: Pernaux, Jean-Marie; Emerit, Marc; Daniel, Jerome; Nicol, Rozenn

AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio · Paper 000224 · June 2002

Abstract

This paper presents the psychophysical validation of our Head Related Transfer Functions (HRTFs) database, using 'static' binaural technique (head movements are not taken into account). After having measured HRTFs for 8 subjects with a high spatial resolution (965 directions), our first goal was to evaluate the performances of static binaural synthesis using individual HRTFs. The long-term goal of this study is to use individual HRTF data as a baseline to perceptually evaluate various HRTF models and individualization strategies, and to assess the contribution of other localization cues (such as dynamic cues provided by head movements and reverberation). In order to compare our results to previous studies, we used an absolute localization procedure across 56 sound-source positions covering the directional sphere. Eight subjects reported perceived the direction of virtual sound sources on a 2D graphical interface, and the collected data was analyzed in terms of front-back confusion rate, average angle of error, and dispersion of the judgments. It could be highlighted that subjects who had training with feedback prior to the experiment showed very good localization performance compared with 'naïve' subjects.

Details

Published in
AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio
Paper number
000224
Publication date
June 6, 2002
Session subject
Virtual, Synthetic and Entertainment Audio
Affiliation
FRANCE TELECOM R&D, Human Interactions, Sound Interfaces Lab, LANNION, France (See document for exact affiliation information.)
Type
Conference Paper