binaural beat

[Richard E Kaplan]

Hello all,

I know this subject has come up in the past...

Any suggestions for an accurate analog binaural beat machine with as many
variable parameters as realistically viable in a simple circuit.

I was exploring the Crystal Idea (inspired by the little Fostex signal
generator which has buttons for generating preset freqs) but this is not
really analog nor variable.

I guess the concept is simply two sine vcos at individual outputs with
variable frequencies and a frequency counter system in series with an LCD.
How accurate can a home grown vco be generated (Hz to 2 decimal places would
be nice) and displayed?

love,
Richard
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