I'm doing a project that requires a box that can generate two different tones that, together, create dissonance. It will also need a volume control, and an audio output for noise-canceling headphones.

Does anybody know how I could either buy something like this, or create it (i.e. schematics and design ideas)?

Soda sucks.
hmmm.... well the output and volume is easy enough, just need a jack and a potentiometer... the tone is another story...
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Gibson Faded Flying V
"Dante's Inferno" Iceman
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Quote by freedoms_stain
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Maybe shagging Mark Knopfler, but that's about it.
Do you think it would be sufficient to connect the outputs of two guitar tuners to a volume control with a single output, and then set each tuner to something like 440 and 420?

Soda sucks.