TIMING PERCEPTION OF SEQUENTIAL COMPLEX TONES CONNECTED WITH GLIDES OF A FORMANT FREQUENCY

  • Satomi Tanaka
  • Minoru Tsuzaki
  • Eriko Aiba
  • Hiroaki Kato

Abstract

Temporal relations between sound events can be perceived without critical difficulty although it is difficult to be defined acoustically. This study was designed to investigate what acoustical change functions as an effective cue to “mark†the changes in sounds, i.e., the arrival of a new event. A perceptual experiment was conducted to test whether any significant difference existed between the starting and ending points of frequency glides as the arrival of a new event. The glide was realized by changing the center frequency of a band-pass filter to simulate a formant change in speech, while a fundamental frequency was fixed to prevent harmonic components from changing frequencies. The results showed that the sensitivity was more accurate for the starting point than for the ending point, similar to the case of sinusoidal frequency glides.

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