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. 2020 Apr 13;21(2):183–197. doi: 10.1007/s10162-020-00750-7

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Background noise effects on derived-band speech ABRs. a, b Grand-average waveforms (N = 12) of averaged response peaks, overlaid for different noise conditions and plotted as for the broadband responses in Fig. 3a. Panels a and b show the transition and steady-state portions, respectively, and the different axes with each panel show the different frequency bands (ordered from low to high; see axis titles). c, d Average derived-band amplitudes (c) and latencies (d) across participants as a function of derived frequency band. The parameter is the noise condition (same colours as in a and b). The results for the transition and steady-state portions are shown on the left and right, respectively. The error bars show the 95% CIs across participants. The brown symbols and lines in panel c show the amplitudes of the noise floor for each frequency band. e, f Average stimulus-to-response correlations across participants (e) and optimal correlation lags (f). g, h Average F0 (g) and harmonic (H2–5) amplitudes (h) across participants. The brown symbols and lines show the corresponding noise floor amplitudes