Binaural beat synthesizer

[Richard E Kaplan]

Hi all,

I am looking for suggestions for accurate to .01-.05 CPS of a sinewave
producing device.
I have been experimenting with binaural beats in atmospheric electronic
music.
Sure it is kind of a fruity idea , but I find it interesting and
effective nonetheless.

Up until now, I have been using various analog synths, tuned with a
frequency counter and layered over a multitrack.

I am looking to buy, or build a device which, ideally can send 1 or more
sine/complex waveforms with a very accurate Hz readout display. It would
be great if it could output two waveforms at independently variable
CPS's with a 0-reletave infinity range.

There used to be a Hemisync synthesizer available when it was a new
idea.

BTW analog tone is imperative.
All suggestions welcomed.

Many thanks,

Richard