p5.js Microphone Toggle
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Using the p5.js canvas drawing library, I was able to create a toggle button that enables/disables your computer microphone when clicked. It listens to this audio channel in real time and produces an animated ellipse that increases/decreases in amplitude based on the input volume.

A [Pen](http://codepen.io/markhillard/pen/dGGwmV) by [Mark Hillard](http://codepen.io/markhillard) on [CodePen](http://codepen.io/).

[License](http://codepen.io/markhillard/pen/dGGwmV/license).