Best effort translation from https://commons.wikimedia.org/wiki/File:Hrir_sintesi_binaurale.png used on the English page for "Sound localization" for some reason. The original image looks to be edited from somewhere else so copyright is questionable but I'm going best faith on the license.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

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