->  CA> The 'psycho accoustics' that LAME uses to generate MP3 sound
->  CA> files is really resonant frequency response. Two identical
->  CA> frequencies will collide generating a third resonant frequency
->  CA> that is usually perceived as a buzzing insect sound similar to
->  CA> a mosquito. With 'tuning' etc. and slight offsets of the two
->  CA> frequencies this resonant frequency can be useful.

-> As in a radio?  Isn' that how a super-heterodyne circuit works,
-> beating two frequencies against each other.

 That is a good analogy.
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