[sdiy] should I BUILD SOME SYNTHS ???

[harrybissell]

Hello Motohiko

yes... I just look at you circuit. It looks like a good idea.

I was starting with a circuit that  has OTA in the
resonance path... so with no extra parts (well OK one
extra opamp for summing... I could have used two resistors
as well...) I can get volume equalization.

I am trying to get an effect where the passband does not drop
so much at resonance... and allow peak to be a little higher
so that the volume sounds similar when resonance is increase.

SVF gets too loud at resonance, Moog filter gets too quiet.

(Sallen-Key is ALWAYS bad behavior... low or high resonance :^)

Thank you for your advice !!!

H^) harry

Motohiko Takeda wrote:

> Hi, harry and all.
>
> I also tried to build mini moog's VCF now.
> I add VC resonance in this way. It looks like work fine.
>
> http://www.aleph.co.jp/~takeda/radio/harvest/img/schem/T-Ladder-schem.gif
>
> check it please.
>
> Cheers,
> Motohiko Takeda
> Tokyo Japan