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. 2016 Oct 3;20:2331216516668303. doi: 10.1177/2331216516668303

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© The Author(s) 2016

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 License (http://www.creativecommons.org/licenses/by-nc/3.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Hearing aids distort binaural cues in steady-state noise. (a) Whole-stimulus ILDs computed using Equation (3) for control recordings and recordings from three different HA programs (colors; see legend and text). Note that no data were measured between 64° and 90° azimuth, where the maximum of the ILD function is expected; thus the connector line is not meant as a meaningful interpolation (dashes). (b) Whole-stimulus waveform (top panel) and envelope (lower panels) ITD computed using Equation (1). ITD values exceeding the axes limits (and the physiologic range of ITD) are not shown, indicated by dotted lines. (c) Whole-stimulus waveform (top panel, insets) and envelope (lower two panels) interaural coherence, computed using Equation (1). Dashed lines indicate the theoretical lower limit of coherence (0 for waveform coherence; π/4 for envelope coherence—see text). Note. HA = hearing aid; ILDs = interaural level differences; ITD = interaural time difference.