Audibility evaluation of triangle-wave tones presented against domestic sounds: Comparison with the audibility of pure tones

Kenji Kurakata, Tazu Mizunami

Research output: Contribution to journalArticle


A study was conducted to examine the effect of multiplicity of frequency components on the audibility of tone presented against interfering noise. The measurement method was essentially identical to that of an earlier study, but triangle-wave tones were used instead as an example of complex tones. The background noise and the target tones were reproduced by a personal computer. They were amplified using a power amplifier and presented to the listener through a loudspeaker in a soundproof room. The listener's chair was set at a distance of 2.5m from the loudspeaker, while the frequency characteristic of the sound reproduction system was corrected to be substantially flat at the listener's position using an equalizer. All the listeners performed pure-tone audiometry and tympanometry and completed a questionnaire concerning hearing difficulties before participating in the experiment to confirm that they had normal hearing for their age.

Original languageEnglish
Pages (from-to)158-160
Number of pages3
JournalAcoustical Science and Technology
Issue number4
Publication statusPublished - 2011
Externally publishedYes



  • Aging effect
  • Audibility
  • Auditory signal
  • Complex tone
  • Domestic sound

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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