The comparative effects of signal sensation level and sound-pressure level on interaural time discriminationa

Janet Koehnke, Anne E. McClave, Patricia Gregorio Pallanck

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

A series of experiments was performed to examine the extent to which precision of interaural time discrimination depends on the sound-pressure level (SPL) and/or sensation level (SL) of the signal. All experiments used a tone burst signal and a continuous white noise masker, which was either diotic or interaurally phase reversed. Results of the first experiment indicate that (1) at equal signal SLs, interaural time and intensity discrimination is more precise when measured with the added diotic noise, and (2) addition of the phase reversed noise, previously shown to cause less precise interaural time discrimination, has a similar effect on interaural intensity discrimination. in the second experiment, interaural time JNDs for a signal of constant SPL were measured as a function of noise level. Results show that a low-level diotic noise can benefit interaural time discrimination, particularly at 500 Hz. the third and fourth experiments were performed to measure interaural time discrimination as a function of increasing signal SPL but constant signal-to-noise ratio. The data show the JND decreasing with increasing signal SPL at nearly the same rate with or without the added noise, indicating that an increase in signal-to-noise ratio is not necessary for improved discrimination.

Original languageEnglish
Pages (from-to)908-915
Number of pages8
JournalJournal of the Acoustical Society of America
Volume78
Issue number3
DOIs
StatePublished - 1 Jan 1985

Fingerprint

time discrimination
sound pressure
discrimination
signal to noise ratios
Sound
Discrimination
white noise
bursts
Experiment
causes

Cite this

@article{6986033ba47d40a58e5bdf89c19f44ba,
title = "The comparative effects of signal sensation level and sound-pressure level on interaural time discriminationa",
abstract = "A series of experiments was performed to examine the extent to which precision of interaural time discrimination depends on the sound-pressure level (SPL) and/or sensation level (SL) of the signal. All experiments used a tone burst signal and a continuous white noise masker, which was either diotic or interaurally phase reversed. Results of the first experiment indicate that (1) at equal signal SLs, interaural time and intensity discrimination is more precise when measured with the added diotic noise, and (2) addition of the phase reversed noise, previously shown to cause less precise interaural time discrimination, has a similar effect on interaural intensity discrimination. in the second experiment, interaural time JNDs for a signal of constant SPL were measured as a function of noise level. Results show that a low-level diotic noise can benefit interaural time discrimination, particularly at 500 Hz. the third and fourth experiments were performed to measure interaural time discrimination as a function of increasing signal SPL but constant signal-to-noise ratio. The data show the JND decreasing with increasing signal SPL at nearly the same rate with or without the added noise, indicating that an increase in signal-to-noise ratio is not necessary for improved discrimination.",
author = "Janet Koehnke and McClave, {Anne E.} and Pallanck, {Patricia Gregorio}",
year = "1985",
month = "1",
day = "1",
doi = "10.1121/1.392921",
language = "English",
volume = "78",
pages = "908--915",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "3",

}

The comparative effects of signal sensation level and sound-pressure level on interaural time discriminationa . / Koehnke, Janet; McClave, Anne E.; Pallanck, Patricia Gregorio.

In: Journal of the Acoustical Society of America, Vol. 78, No. 3, 01.01.1985, p. 908-915.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - The comparative effects of signal sensation level and sound-pressure level on interaural time discriminationa

AU - Koehnke, Janet

AU - McClave, Anne E.

AU - Pallanck, Patricia Gregorio

PY - 1985/1/1

Y1 - 1985/1/1

N2 - A series of experiments was performed to examine the extent to which precision of interaural time discrimination depends on the sound-pressure level (SPL) and/or sensation level (SL) of the signal. All experiments used a tone burst signal and a continuous white noise masker, which was either diotic or interaurally phase reversed. Results of the first experiment indicate that (1) at equal signal SLs, interaural time and intensity discrimination is more precise when measured with the added diotic noise, and (2) addition of the phase reversed noise, previously shown to cause less precise interaural time discrimination, has a similar effect on interaural intensity discrimination. in the second experiment, interaural time JNDs for a signal of constant SPL were measured as a function of noise level. Results show that a low-level diotic noise can benefit interaural time discrimination, particularly at 500 Hz. the third and fourth experiments were performed to measure interaural time discrimination as a function of increasing signal SPL but constant signal-to-noise ratio. The data show the JND decreasing with increasing signal SPL at nearly the same rate with or without the added noise, indicating that an increase in signal-to-noise ratio is not necessary for improved discrimination.

AB - A series of experiments was performed to examine the extent to which precision of interaural time discrimination depends on the sound-pressure level (SPL) and/or sensation level (SL) of the signal. All experiments used a tone burst signal and a continuous white noise masker, which was either diotic or interaurally phase reversed. Results of the first experiment indicate that (1) at equal signal SLs, interaural time and intensity discrimination is more precise when measured with the added diotic noise, and (2) addition of the phase reversed noise, previously shown to cause less precise interaural time discrimination, has a similar effect on interaural intensity discrimination. in the second experiment, interaural time JNDs for a signal of constant SPL were measured as a function of noise level. Results show that a low-level diotic noise can benefit interaural time discrimination, particularly at 500 Hz. the third and fourth experiments were performed to measure interaural time discrimination as a function of increasing signal SPL but constant signal-to-noise ratio. The data show the JND decreasing with increasing signal SPL at nearly the same rate with or without the added noise, indicating that an increase in signal-to-noise ratio is not necessary for improved discrimination.

UR - http://www.scopus.com/inward/record.url?scp=0021821540&partnerID=8YFLogxK

U2 - 10.1121/1.392921

DO - 10.1121/1.392921

M3 - Article

VL - 78

SP - 908

EP - 915

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 3

ER -