[sdiy] 1-pole LPF using a differential integrator?

[Aaron Lanterman]

> I think you are after the Buchla 259 here Aaron. Please check the  
> schematics.
>
> The wavefolder to some degree simulates a sweeping lowpass-filter.
>
> The even/odd harmonic balance pot is interesting.


At that particular moment I was thinking of the 258:

http://www.simple-answer.com/258mod.jpg

See the lower right corner.

The 259 certainly has a lot more sophisticated goodies, but the2 258  
seems to have its particular charms (that weird spikey thing coming  
out of the tail of the comparitor is kinda interesting).

- Aaron