Audio spectrogram tool
3D Spectrogram with Microphone Input
User controls:
press 'p' to pause view
press 'v' to toggle view
press 't' to toggle freq labels
press 'f' to toggle fade effect
press 'd' to toggle dB amplitude scale
//Modified by Evan Morgan 2013 - http://you-rhythmic.com
//Based on version modified by kylejanzen 2011 - http://kylejanzen.wordpress.com
//Original script wwritten by John Locke 2011 - http://gracefulspoon.com