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. 2020 Sep 10;14:846. doi: 10.3389/fnins.2020.00846

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Copyright © 2020 Alickovic, Lunner, Wendt, Fiedler, Hietkamp, Ng and Graversen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The active NR processing does not enhance the neural representation of the ignored acoustic scene consisting of the ignored talker and background noise. Boxplot showing the reconstruction accuracy values of the ignored acoustic scene envelope reconstructed from the ignored acoustic scene decoder for two signal-to-noise ratio (SNR) levels tested with noise reduction (NR) scheme inactive (OFF) or active (ON; left column) for global averages across NR schemes (middle column) and for global averages across SNR levels (right column). A significant main effect for SNR and an interaction between SNR and NR were observed. The results showed no significant main effect of NR. A significant difference in reconstruction performances between inactive and active NR in the pairwise comparison at higher SNR (+8 dB) was observed. The horizontal lines in yellow correspond to each participant. The horizontal lines in yellow denote single participants and the horizontal lines in black depict predictions of linear mixed models. The black horizontal line in the boxplot denotes the mean reconstruction accuracy of the ignored acoustic scene envelope and the box indicates the upper and the lower quartiles, with the vertical lines representing the minimum and the maximum reconstruction accuracy values. The asterisk indicates significant differences (*p < 0.05); ns, not significant.