Image:Acoustic net3.jpg

GFDL presumed.

Zsinj believes in good faith that this image has been created by the uploader who, by uploading it to Wikipedia, has released it under the GNU Free Documentation License.
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To the uploader: Please clarify the copyright status of this image. If you indeed wished it to be released under the GFDL please replace {{GFDL-presumed}} with {{Template:GFDL-self|GFDL-self]]]]}} by editing the image description page. Alternatively you can choose a different image copyright tag, or arrange for the image to be deleted.