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Proceedings Paper

Synthesizing a 3D auditory scene for use in an electronic travel aid for the blind
Author(s): Michał Bujacz; Paweł Strumiłło
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Paper Abstract

A system for auditory presentation of 3D scenes to the blind is presented, with the focus of the paper on the synthesis of sound codes suitable to carry important scene information. First, a short review of existing electronic travel aids for the blind (ETAs) is provided. Second, the project of the wearable ETA device, currently under development at the Technical University of Lodz, is outlined, along with the system modules: 3D scene reconstruction, object (obstacle) selection, synthesis of the sound code and the application of head related transfer functions (HRTFs) for generating spatialized sound. The importance of psychoacoustics, especially Bregman's theory of sound streams, is analyzed and proposed methods of sound code synthesis are presented, along with the software used for their verification.

Paper Details

Date Published: 28 December 2007
PDF: 8 pages
Proc. SPIE 6937, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007, 693737 (28 December 2007); doi: 10.1117/12.784825
Show Author Affiliations
Michał Bujacz, Technical Univ. of Łódź (Poland)
Paweł Strumiłło, Technical Univ. of Łódź (Poland)


Published in SPIE Proceedings Vol. 6937:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007

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