Hearing thresholds for low-frequency complex tones of less than 150 Hz

Jongkwan Ryu, Hiroshi Sato, Kenji Kurakata, Yukio Inukai

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Hearing thresholds for low-frequency complex tones were measured to investigate effects of intensity and frequency differences between components and effects of the number of components on the detection of complexes. Complex tones comprised two tones, geometrically centered at 60 Hz, with frequency differences of 30, 60, 90, or 120 Hz. Sound pressure levels of the two tones were set to equal intensity or to equal sensation level. Additional threshold measurements were conducted for complex tones comprising 2-6 components at 25-145 Hz. A complex signal with multiple tones was detectable even if the levels of individual components were below the threshold. The improvement of complex signal detection varied greatly with the level difference and number of tones. Threshold levels for complex tones (in terms of level per component) decreased as the number of tones increased. Complex tones whose components have mutually similar frequencies were more detectable than those with separated components.

Original languageEnglish
Pages (from-to)21-30
Number of pages10
JournalJournal of Low Frequency Noise Vibration and Active Control
Volume30
Issue number1
DOIs
Publication statusPublished - 2011 Mar 1
Externally publishedYes

Fingerprint

hearing
Signal detection
Audition
Acoustic waves
low frequencies
thresholds
signal detection
sound pressure
effect
detection

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Geophysics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

Cite this

Hearing thresholds for low-frequency complex tones of less than 150 Hz. / Ryu, Jongkwan; Sato, Hiroshi; Kurakata, Kenji; Inukai, Yukio.

In: Journal of Low Frequency Noise Vibration and Active Control, Vol. 30, No. 1, 01.03.2011, p. 21-30.

Research output: Contribution to journalArticle

@article{26347612b0cd4dd6b1f6faf9c16923c5,
title = "Hearing thresholds for low-frequency complex tones of less than 150 Hz",
abstract = "Hearing thresholds for low-frequency complex tones were measured to investigate effects of intensity and frequency differences between components and effects of the number of components on the detection of complexes. Complex tones comprised two tones, geometrically centered at 60 Hz, with frequency differences of 30, 60, 90, or 120 Hz. Sound pressure levels of the two tones were set to equal intensity or to equal sensation level. Additional threshold measurements were conducted for complex tones comprising 2-6 components at 25-145 Hz. A complex signal with multiple tones was detectable even if the levels of individual components were below the threshold. The improvement of complex signal detection varied greatly with the level difference and number of tones. Threshold levels for complex tones (in terms of level per component) decreased as the number of tones increased. Complex tones whose components have mutually similar frequencies were more detectable than those with separated components.",
author = "Jongkwan Ryu and Hiroshi Sato and Kenji Kurakata and Yukio Inukai",
year = "2011",
month = "3",
day = "1",
doi = "10.1260/0263-0923.30.1.21",
language = "English",
volume = "30",
pages = "21--30",
journal = "Journal of Low Frequency Noise Vibration and Active Control",
issn = "1461-3484",
publisher = "Multi-Science Publishing Co. Ltd",
number = "1",

}

TY - JOUR

T1 - Hearing thresholds for low-frequency complex tones of less than 150 Hz

AU - Ryu, Jongkwan

AU - Sato, Hiroshi

AU - Kurakata, Kenji

AU - Inukai, Yukio

PY - 2011/3/1

Y1 - 2011/3/1

N2 - Hearing thresholds for low-frequency complex tones were measured to investigate effects of intensity and frequency differences between components and effects of the number of components on the detection of complexes. Complex tones comprised two tones, geometrically centered at 60 Hz, with frequency differences of 30, 60, 90, or 120 Hz. Sound pressure levels of the two tones were set to equal intensity or to equal sensation level. Additional threshold measurements were conducted for complex tones comprising 2-6 components at 25-145 Hz. A complex signal with multiple tones was detectable even if the levels of individual components were below the threshold. The improvement of complex signal detection varied greatly with the level difference and number of tones. Threshold levels for complex tones (in terms of level per component) decreased as the number of tones increased. Complex tones whose components have mutually similar frequencies were more detectable than those with separated components.

AB - Hearing thresholds for low-frequency complex tones were measured to investigate effects of intensity and frequency differences between components and effects of the number of components on the detection of complexes. Complex tones comprised two tones, geometrically centered at 60 Hz, with frequency differences of 30, 60, 90, or 120 Hz. Sound pressure levels of the two tones were set to equal intensity or to equal sensation level. Additional threshold measurements were conducted for complex tones comprising 2-6 components at 25-145 Hz. A complex signal with multiple tones was detectable even if the levels of individual components were below the threshold. The improvement of complex signal detection varied greatly with the level difference and number of tones. Threshold levels for complex tones (in terms of level per component) decreased as the number of tones increased. Complex tones whose components have mutually similar frequencies were more detectable than those with separated components.

UR - http://www.scopus.com/inward/record.url?scp=79959322103&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79959322103&partnerID=8YFLogxK

U2 - 10.1260/0263-0923.30.1.21

DO - 10.1260/0263-0923.30.1.21

M3 - Article

AN - SCOPUS:79959322103

VL - 30

SP - 21

EP - 30

JO - Journal of Low Frequency Noise Vibration and Active Control

JF - Journal of Low Frequency Noise Vibration and Active Control

SN - 1461-3484

IS - 1

ER -