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. 2022 Jul 14;16:933049. doi: 10.3389/fnins.2022.933049

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Copyright © 2022 Zhang, Yang, Li, Li, Qin and He.

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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(A) The distribution of the average of MFCC parameters to each mel filter. (B) The distribution of the average of the second-order differential MFCC parameters to each mel filter. (C) Boxplot of AFVC.