[sdiy] An Improved Sine Shaper Circuit

René Schmitz synth at schmitzbits.de
Fri Apr 17 10:56:41 CEST 2020

Hi Don,

Interesting circuit, and a great article.

I'm pretty sure I have seen a similar technique before, because I have 
used it. (cusp canceling)

Have a look at Thomas Henry's VCO-555, in the sine shaper, he adds in an 
out of phase version of the triangle after the tanh shaping from the 
OTA. This is what R26 does.



On 17.04.2020 01:18, Donald Tillman wrote:
> Hey folks,
> I came up with a new sine shaper circuit.  It's a weird variation on old sine shaper circuit.  And it has an order of magnitude more accuracy.
> I've written it up here:
>      An Improved Sine Shaper Circuit
>      http://till.com/articles/sineshaper/
> Check it out and tell me what you think...
>    -- Don
> --
> Donald Tillman, Palo Alto, California
> http://www.till.com
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synth at schmitzbits.de

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