Audio Wave Free Icon (PNG, vector)

Audio Wave and other 63,400 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px.
It is a sequence of perfectly vertical lines. The lines are uniform in weight/width, but vary in height. They are all vertically aligned along an invisible horizontal center line. The lines vary from shortest to medium to longest, then back down to shortest. This pattern repeats one more time.

Idea of Audio Wave Icon by Nate

We've received the idea on June 05, 2013 and created the icons on June 15, 2013

An Icon that resembles the display of a digital radio, example:
Audio Wave icon