Ghost Tone Synthesizer
Plays "Ghost Tones" that you hear but arent played.
This is a combination tone synthesizer. Combination tones are an amazing phenomena where two tones combine to create a third 'ghost tone' that you hear but isn't actually there. What this synthesizer does is take the notes you play on a keyboard, and never plays those notes. Instead, it plays two random notes that combine to create a ghost note of the note you played. So, you hear the notes you're playing, but theyre not there :) Do a spectral analysis and you'll see - youre just imagining it~ Its pretty amazing.
NOTE: This must be played at a loud volume for the effect to be heard.
This guy does a nice explanation of combination tones: