EFFECTS OF THE SOUND-PRESSURE-LEVEL DIFFERENCE BETWEEN CROSSING GLIDES ON THE OCCURRENCE OF THE GAP TRANSFER ILLUSION

  • Tsuyoshi Kuroda
  • Yoshitaka Nakajima
  • Shuntarou Eguchi

Abstract

A psychophysical experiment was conducted in order to examine the effect of the sound- pressure-level difference between crossing glides on the occurrence of the gap transfer illusion. The gap transfer illusion is an auditory phenomenon in which a temporal gap in a long glide is perceived as if it were in a short crossing glide that is physically continuous. It turned out that the gap transfer illusion takes place when the short glide is down to 8 dB below the level of the long glide. The results indicate that the subjective continuity of the long glide in the gap transfer illusion is different from the continuity in the continuity illusion, in which the masking potential of the interrupting sound is requisit

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