Psychophysical boundary for categorization of voiced–voiceless stop consonants in native Japanese speakers

Shunsuke Tamura, Kazuhito Ito, Nobuyuki Hirose, Shuji Mori

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose: The purpose of this study was to investigate the psychophysical boundary used for categorization of voiced–voiceless stop consonants in native Japanese speakers. Method: Twelve native Japanese speakers participated in the experiment. The stimuli were synthetic stop consonant–vowel stimuli varying in voice onset time (VOT) with manipulation of the amplitude of the initial noise portion and the first formant (F1) frequency of the periodic portion. There were 3 tasks, namely, speech identification to either/d/ or/t/, detection of the noise portion, and simultaneity judgment of onsets of the noise and periodic portions. Results: The VOT boundaries of/d/–/t/ were close to the shortest VOT values that allowed for detection of the noise portion but not to those for perceived nonsimultaneity of the noise and periodic portions. The slopes of noise detection functions along VOT were as sharp as those of voiced– voiceless identification functions. In addition, the effects of manipulating the amplitude of the noise portion and the F1 frequency of the periodic portion on the detection of the noise portion were similar to those on voiced–voiceless identification. Conclusion: The psychophysical boundary of perception of the initial noise portion masked by the following periodic portion may be used for voiced–voiceless categorization by Japanese speakers.

Original languageEnglish
Pages (from-to)789-796
Number of pages8
JournalJournal of Speech, Language, and Hearing Research
Volume61
Issue number3
DOIs
Publication statusPublished - Mar 1 2018

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Noise
stimulus
Voice Onset Time
Stop Consonants
Psychophysical
manipulation
Stimulus
time
experiment
Values

All Science Journal Classification (ASJC) codes

  • Language and Linguistics
  • Linguistics and Language
  • Speech and Hearing

Cite this

Psychophysical boundary for categorization of voiced–voiceless stop consonants in native Japanese speakers. / Tamura, Shunsuke; Ito, Kazuhito; Hirose, Nobuyuki; Mori, Shuji.

In: Journal of Speech, Language, and Hearing Research, Vol. 61, No. 3, 01.03.2018, p. 789-796.

Research output: Contribution to journalArticle

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