What Does Your House Sing? or Two Audio Geeks and a Microwave

A few years ago I heard a story on This American Life about a guy named Toby Lester, who identified all the electronic devices in his house according to the musical tones they emitted. For instance, in his kitchen, the refrigerator, which was always on and droning, was a b flat. Anything else that he turned on in the kitchen; his laptop, the toaster, the microwave, emitted another tone, which played against the fridge.

Immediately my mind started composing. It seemed obvious that the impact of

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