waveshaping

[Paul Perry]

At 08:35 AM 28/05/99 +0200, Ingo debus at cityweb wrote:

>There was a "Square-to-Saw-Converter" in Elektor a long time ago. I
>built it back then, it worked pretty well. 

Ingo, can you remember approximately how this worked?
I have been trying to come up with a square to triangle, based on an 
integrator which makes a triangle from the square, the triangle 
being amplitude being inversely proportional to the frequency.
If you can generate a reciprocal easily, then you can multiply the 
triangle by the reciprocal of the triangle peak height
(easily determind by sampling at the peak, which corresponds to the falling
edge of the square).
All ideas on this are welcome!

paul perry frostwave P/L Melbourne Australia