Open Access
Issue
Acta Acust.
Volume 10, 2026
Article Number 9
Number of page(s) 16
Section Hearing, Audiology and Psychoacoustics
DOI https://doi.org/10.1051/aacus/2026002
Published online 18 February 2026

Supplementary material

thumbnail Figure S1.

Heatmaps of all HPD conditions and participants for the multi-tone signal played back at 70 dB(A). Gray-scaled pixels indicate the relative frequencies of the participants‘ responses plotted against the true target angles.

thumbnail Figure S2.

Heatmaps of all HPD conditions and participants for the multi-tone signal played back at 85 dB(A). Gray-scaled pixels indicate the relative frequencies of the participants‘ responses plotted against the true target angles.

thumbnail Figure S3.

Heatmaps of all HPD conditions and participants for the tonal signal played back at 70 dB(A). Gray-scaled pixels indicate the relative frequencies of the participants‘ responses plotted against the true target angles.

thumbnail Figure S4.

Heatmaps of all HPD conditions and participants for the tonal signal played back at 85 dB(A). Gray-scaled pixels indicate the relative frequencies of the participants‘ responses plotted against the true target angles.

thumbnail Figure S5.

Mean (dashed line) and standard deviation of the angular error distributions with front-back correction for each HPD condition pooled over all participants for the multi-tone signal at 70 dBA.

thumbnail Figure S6.

Mean (dashed line) and standard deviation of the angular error distributions with front-back correction for each HPD condition pooled over all participants for the multi-tone signal at 85 dBA.

thumbnail Figure S7.

Mean (dashed line) and standard deviation of the angular error distributions with front-back correction for each HPD condition pooled over all participants for the tonal signal at 70 dBA.

thumbnail Figure S8.

Mean (dashed line) and standard deviation of the angular error distributions with front-back correction for each HPD condition pooled over all participants for the tonal signal at 85 dBA.

thumbnail Figure S9.

Calculated ILDs for each HPD condition for the multi-tone signal at 70 dB(A), either calculated out of the clean target signals (open ears, no background noise) or extracted by the phase-inversion method.

thumbnail Figure S10.

Calculated ILDs for each HPD condition for the multi-tone signal at 85 dB(A), calculated out of the extracted target signals by the phase-inversion method.

thumbnail Figure S11.

Calculated ILDs for each HPD condition for the tonal signal at 85 dB(A), calculated out of the extracted target signals by the phase-inversion method.


© The Author(s), Published by EDP Sciences, 2026

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