A simple visualizer not unlike a single-line spectrogram or spectrograph, based on the output of an FFT organized into octaves.
Virtual Audio Cables (VAC)
For your BlinkyLight to properly read the audio please look into the following software:
- VB-Audio Virtual Cable (Windows) - http://vb-audio.pagesperso-orange.fr/Cable/index.htm
- Soundflower (Mac) - http://code.google.com/p/soundflower/
- PulseAudio (GNU/Linux) - you can simply use 'pavucontrol' to graphically change the recording device's source from your microphone (usually "Built-in Audio Analog Stereo", the basic analog stereo microphone input) to a monitor device such as "Monitor of Built-in Audio Analog Stereo". In this case "Built-in Audio Analog Stereo" is an output (which might not be obvious) and "Monitor of the Built-in audio analog stereo" is a device which can be used as an input. If the monitor device doesn't exist, you can create it, see: https://wiki.archlinux.org/index.php/PulseAudio/Examples#ALSA_monitor_source
A good tutorial for setting up your VAC to output to your BlinkyTape is written here: http://forums.blinkinlabs.com/index.php?p=/discussion/68/windows-soundflower-alternative-vb-audio-virtual-cable/p1
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