An original paradigm to investigate pure informational masking using complex tones

Axelle Calcus*, Trevor R. Agus, Cécile Colin, Régine Kolinsky, Paul Deltenre

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Most usual speech masking situations induce both energetic and informational masking. Energetic masking (E.M.) arises because both signal and maskers contain energy in the same critical bands. Informational masking (I.M.) prevents the listeners from disentangling acoustical streams even when they are well separated in frequency, and is thought to reflect central mechanisms. In order to quantify I.M. without E.M. contamination in complex auditory situations, target and maskers can by presented dichotically. However, this manipulation provides the listeners with important lateralisation cues, which reduces I.M. Therefore, this study aimed at restoring a fair amount of I.M. using complex tones in a new dichotic paradigm. Regularly repeating signals and random-frequency multitone maskers were presented dichotically, but switched from one ear to the other within a 10s sequence. Switches could either appear at a slow or rapid rate. We compared listeners' detection performance in these switching situations to that elicited in traditional diotic and dichotic situations. Results showed that the amount of I.M. induced when signal and maskers were rapidly switching throughout a sequence was significantly higher than in classical dichotic situations. Therefore, this paradigm provides an original tool to evaluate auditory perception in situations of pure I.M. using complex tones.

Original languageEnglish
Title of host publicationAn original paradigm to investigate pure informational masking using complex tones
Volume19
DOIs
Publication statusPublished - 19 Jun 2013
Event21st International Congress on Acoustics, ICA 2013 - 165th Meeting of the Acoustical Society of America - Montreal, QC, Canada
Duration: 02 Jun 201307 Jun 2013

Publication series

NameProceedings of Meetings on Acoustics
ISSN (Print)1939-800X

Conference

Conference21st International Congress on Acoustics, ICA 2013 - 165th Meeting of the Acoustical Society of America
CountryCanada
CityMontreal, QC
Period02/06/201307/06/2013

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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    Calcus, A., Agus, T. R., Colin, C., Kolinsky, R., & Deltenre, P. (2013). An original paradigm to investigate pure informational masking using complex tones. In An original paradigm to investigate pure informational masking using complex tones (Vol. 19). (Proceedings of Meetings on Acoustics). https://doi.org/10.1121/1.4800140