Effect of Interaural Difference for Localization of Spatially Segregated Sound

Author

Morikawa, Daisuke

Author_Institution

Sch. of Inf. Sci., Japan Adv. Inst. of Sci. & Technol., Nomi, Japan

fYear

2014

fDate

27-29 Aug. 2014

Firstpage

602

Lastpage

605

Abstract

The role of interaural differences in localization of spatially segregated sound was clarified by performing listening tests on sound localization. Four subjects were asked to distinguish two sources of white noise with various interaural time differences (ITDs) or interaural level differences (ILDs). As a result, the segregated rate reached 80% when the ITD between two white noise sources corresponded to an angular difference of 22 degrees. The segregated rate degraded to 50% when the ITD between two white noise sources corresponded to an angular difference of 7 degrees. In addition, the segregated rate reached 80% when the ILD between two white noise sources corresponded to an angular difference of 30 degrees. The segregated rate degraded to 50% when the ILD between two white noise sources corresponded to an angular difference of about 15 degrees. These results suggest that sound sources could be spatially segregated using even only ITD or ILD.

Keywords

acoustic signal processing; source separation; white noise; ILD; ITD; interaural difference effect; interaural level differences; interaural time differences; listening tests; spatially segregated sound localization; white noise sources; Analysis of variance; Auditory system; Azimuth; Headphones; System-on-chip; Timbre; White noise; Cocktail party effect; Interaural level difference; Interaural time difference; Sound localization; Spatially segregated sound;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP), 2014 Tenth International Conference on

Conference_Location

Kitakyushu

Print_ISBN

978-1-4799-5389-9

Type

conf

DOI

10.1109/IIH-MSP.2014.156

Filename

6998401