Localization in a HRTF-based minimum-audible-angle listening test for guib applications

Автор: Wersnyi Gyrgy

Статья в выпуске: т.7, 2007 года.

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Listening tests were carried out for investigating the localization judgments of 40 untrained subjects through equalized headphones and with HRTF (Head-Related Transfer Function) synthesis. The investigation was made on the basis of the former GUIB. (Graphical User Interface for Blind Persons) project in order to determine the possibilities of a 2D virtual sound screen and headphone playback. Results are presented about the minimum, maximum and average values of discrimination skills. The measurement method includes a special 3-categoryforced- choice Minimum Audible Angle report on a screen-like rectangle virtual auditory surface in front of the listener. Average spatial resolution of 7-11° and 15-24° were measured in the horizontal plane and median plane respectively dependent of spectral content of the noise signal excitation. Accessory signal processing is suggested to enhance poor vertical localization performance.

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Digital signal processing, sound source localization, user interface, blind

Короткий адрес: https://sciup.org/14316260

IDR: 14316260

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