Band Tones: Auditory Stream Segregation with Alternating Frequency Bands

DOI IR (HANDLE) PDF Web Site 51 References Open Access
  • Ueda, Kazuo
    Department of Acoustic Design, Faculty of Design/Research Center for Applied Perceptual Science, Kyushu University Research and Development Center for Five-Sense Devices, Kyushu University
  • Jhang, Geng-Yan
    Human Science International Course, Graduate School of Design, Kyushu University
  • Hasuo, Emi
    Department of Acoustic Design, Faculty of Design/Research Center for Applied Perceptual Science, Kyushu University
  • Takeichi, Hiroshige
    Open Systems Information Science Team, Advanced Data Science Project (ADSP), RIKEN Information R&D and Strategy Headquarters (R-IH), RIKEN
  • Remijn, Gerard B.
    Department of Acoustic Design, Faculty of Design/Research Center for Applied Perceptual Science, Kyushu University

Bibliographic Information

Published
2025-03-04
Resource Type
journal article
Rights Information
  • Creative Commons Attribution 4.0 International
  • © The Author(s) 2025
DOI
  • 10.1007/s40857-025-00348-0
Publisher
Springer

Description

An alternating tone sequence may be perceptually integrated into one stream or segregated into two streams based on pitch and timbre differences between the tones (sequential stream segregation). However, the effect of the spectral dispersion of harmonic complex tones on sequential stream segregation has been largely unexplored. We introduced band tones that were harmonic complex tones divided into several frequency bands, in which frequency components in every other frequency band were removed. Here, we show that segregation was reported more often with fewer frequency bands and larger separation in fundamental frequency. Listeners generally responded to 2–8-band stimuli as segregated most of the time. However, the percentages of segregation responses for 16-band stimuli were generally dominated by fundamental frequency separations and whether the movements of fundamental frequencies and band-like spectral patterns were congruent or incongruent. The results suggest that the auditory system cannot organize rapidly alternating frequency component blocks spanning a wide frequency range into one stream.

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