Volume 5, 2021
|Number of page(s)||16|
|Section||Hearing, Audiology and Psychoacoustics|
|Published online||14 October 2021|
A notched-noise precursor affects both diotic and dichotic notched-noise masking
Department of Experimental Audiology, Otto von Guericke University, Leipziger Str. 44, 39120 Magdeburg, Germany
2 Department of Computer Science, University College London, Gower Street, London WC1E 6EA, United Kingdom
* Corresponding author: email@example.com
Accepted: 2 September 2021
The present study investigates how diotic and dichotic masked thresholds, in a notched-noise masking paradigm, are affected by activation of the Medial OlivoCochlear (MOC) reflex. Thresholds were obtained for a 500-Hz pure tone diotic or a dichotic signal, S (S0 or Sπ respectively), in the presence of a simultaneous or forward diotic masker (bandpass noise with no notch or a 400-Hz notch). A diotic precursor sound (bandpass noise with a 400- or 800-Hz notch) was presented prior to the signal and masker to activate the MOC reflex. For simultaneous- and forward-masking conditions, the decrease in masked thresholds as a notch was introduced in the masker was larger for the diotic than for the dichotic condition. This resulted in a reduced binaural masking level difference (BMLD) for the masker with a notch. The precursor augmented these two effects. The results indicate that the effect of the precursor, eliciting the MOC reflex, is less pronounced when binaural cues are processed.
Key words: Binaural / Masking / Suppression / Auditory frequency selectivity
© F. Dymel et al., Published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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