This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Sample gammatone.svg Sample Gammatone function plotted in Gnuplot set xrange plot cos pi exp pi notitle Roger wilco talk created this work entirely by myself July UTC Roger wilco talk File Samplegammatone Roger wilco Original upload log en Samplegammatone svg bytes Roger wilco Sample Gammatone function plotted in