HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Influence of interaural time differences on loudness for low-frequency pure tones at varying signal and noise levels

Gauthier Berthomieu 1, * Vincent Koehl 1 Mathieu Paquier 1
* Corresponding author
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
Abstract : Directional loudness sensitivity, which is generally accounted for by at-ear pressure modifications because of the perturbation of the sound field by the head, has been reported to occur at 400 Hz where shadowing effects are usually considered small. Then, an effect of the interaural time difference (ITD) on loudness has been observed for pure tones below 500 Hz. The latter was rather small but still significant, contributing to directional loudness sensitivity. In addition, it has been shown that the effect of ITD on loudness was caused by the ITD itself and not by its related localization. As this effect appeared significant at low level only (40 phon), it was hypothesized that ITD could help separate the signal from the internal noise and enhance its loudness. The aim of the present study is to confirm this hypothesis by observing the effect of ITD on the loudness of low-frequency pure tones (100 and 200 Hz) for various signal-to-noise ratios. The signal level was varied from 30 to 90 phon and the noise could be internal only or external also. The effect of ITD appeared significant at low levels or for small signal-to-noise ratios.
Complete list of metadata

Cited literature [23 references]  Display  Hide  Download

Contributor : Vincent Koehl Connect in order to contact the contributor
Submitted on : Friday, September 1, 2017 - 1:45:45 PM
Last modification on : Monday, March 14, 2022 - 11:08:10 AM
Long-term archiving on: : Saturday, December 2, 2017 - 12:45:06 PM


Publisher files allowed on an open archive



Gauthier Berthomieu, Vincent Koehl, Mathieu Paquier. Influence of interaural time differences on loudness for low-frequency pure tones at varying signal and noise levels. Proceedings of meetings on acoustics, AIP/Scitation, 2017, 30 (1), pp.050004. ⟨10.1121/2.0000553⟩. ⟨hal-01580000⟩



Record views


Files downloads