純音の定位に及ぼす妨害音の影響

概要

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The results of experiments examining the localized direction of a tone in the presence of band limited pink noise (300-8, 000Hz) are described. Both real and virtual sound images have been considered. It has been found that for signal frequencies of approximately 1kHz or less the perceived image position is shifted away from the noise source regardless of image type. For higher signal frequencies, the sound localization for a tone was markedly disrupted by the presence of interfering noise. The shift of localized direction of a signal away from the noise may be explained as being due to a kind of spatial masking between them. This would cause a deformation of the sound image of the signal which in turn results in the biasing of a 'perceived center' of the signal sound image away from the noise.
社団法人日本音響学会の論文