[sdiy] Moog-type highpass filter

[cheater cheater]

On Thu, Apr 22, 2010 at 12:58, Antti Huovilainen <ajhuovil at cc.hut.fi> wrote:
> On Thu, 22 Apr 2010, Yves Usson wrote:
>
>> If you want to experiment with this circuit I would rather recommand to
>> start on the basis of Osamu Hoshuyama's design :
>> http://www5b.biglobe.ne.jp/~houshu/synth/Vchp0302.GIF
>
> And while they're at it, an analysis of how it works (hopefully with large
> signal considerations too) would be nice.

Which brings back the question of how much the signal itself
influences the sound of the Moog filter. I think it would be
worthwhile to even make a Moog LPF that can amplify the (AC) signal
while it's going through the ladder, while keeping the whole effect at
unity gain.

D.