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. 2024 Oct 24;14:25200. doi: 10.1038/s41598-024-76932-7

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© The Author(s) 2024

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. 4 — Error rate for the secondary task (digit recall) for the three age groups (adults, first- to second-graders, and third- to fourth-graders) for the five noise conditions: no noise (Q), anechoic MTB with SNRs of 0 dB (A1) and −3 dB (A2) and MTB with room effects with SNRs of 0 dB (R1) and −3 dB (R2). The error rate is depicted on the y-axis and the noise conditions are represented on the x-axis. Box plots show the median (middle line), and interquartile range of the data distributions.