ASA 124th Meeting New Orleans 1992 October

4pPPa11. Basic study of estimation of auditory source width (ASW) (1) ASW of two adjacent 1/3-oct band noises.

K. Ueda

Comprehensive Housing R&D Inst., Sekisui House Ltd., Kabutodai, Kizu, Kyoto 619-02, Japan

M. Kiyama

M. Morimoto

Kobe Univ. Rokko, Nada, Kobe 657, Japan

First, the paired comparison tests show that auditory source width (ASW) cannot be uniquely determined by the degree of interaural cross correlation and SPL overall frequencies of the stimulus but is affected by the frequency characteristics of the degree of interaural cross correlation and the power spectrum. Second, the experiments, in which ASW of 2/3-oct band noises consisted of two adjacent 1/3-oct band noises with different degree of interaural cross correlation are quantitatively evaluated by subjects, indicate that ASW of 2/3-oct band noise can be estimated by summing weighted ASW of each 1/3-oct band noise.