THE SUBJECTIVE CONTINUITY OF FREQUENCY-GLIDE TONES IN THE GAP TRANSFER ILLUSION

  • Tsuyoshi Kuroda
  • Yoshitaka Nakajima

Abstract

The gap transfer illusion is an auditory illusion in which a very short temporal gap inserted ina long frequency glide is perceived as if it were in a crossing short glide. We examinedwhether the subjective continuity of the long glide in this illusion is caused by reallocation ofsound energy from the short glide to the long glide. We found that a glide of 4000 ms with agap of 100 ms could be perceived as continuous even when a crossing glide of 400 ms was 9dB weaker, but a single glide of 4000 ms with an intensity dip of 100 ms was perceived asdiscontinuous even when the dip was only 3 dB. Thus, the subjective continuity of the longglide in the gap transfer illusion cannot be attributed to reallocation of sound energy.
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