[sdiy] Re: moog high pass

[houshu at muj.biglobe.ne.jp]

Hello List, 

"Theo" <t.hogers at home.nl> wrote:
>  -Simple as in adding inverted LP filter output to input signal to get HP.
> Takes about one opamp and 3 resistors.

An example:

   http://www5b.biglobe.ne.jp/~houshu/synth/moritaVCF76.gif

I don't follow all the discussion.  However, the following schematics could be
useful.

   http://www5b.biglobe.ne.jp/~houshu/synth/Vcfv0212.GIF
   http://www5b.biglobe.ne.jp/~houshu/synth/Vchp0302.GIF

Don't ask me to explain how they work please ;-)

Best,

Sam Hoshuyama