peter green wrote:
> olins circuit works roughly as follows
>
> the first two resistors hold the line at mid rail when your output is
> hi-z, this way as long as you make your output hi-z when not producing
> tone you shouldn't get any clicks (clicks are typically the result of
> filtered versions of a sudden change in the average voltage).
>
> the next 3 RC pairs act as filters passing the low frequency components
> of the infinite series of sinewaves but rejecting the higher frequency
> components.
>
> the final RC pair (note the opposite pairing and very much higher RC
> multiple) blocks the 2.5V DC offset from the output.

I couldn't have said it better, and now I don't have to.

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