Cgs synth

The schematic was in Thomas Henry's book on the subject, as well as being on
the web somewhere. Doing a search should bring it up. Usually the diagram
uses both stages in series for a single follower, but a single stage is
quite good enough.

Ken

>Ken, thanks for the feedback on the bandpass filter boards.
>
>As for the NE571 (Philips SA571 too it appears), do you have a circuit
>in mind? The price does not seem unreasonable for 2 followers if it
>uses as few external parts as I suspect. But I'm not much at design.
> OTOH, I can do breadboards and PC board assembly pretty well.
>(Jameco has NE571's, and a lot of companies have SA571's.)
>
>Thanks to Mark as well for the noteproc link.
>
>Larry T.
>
>
>--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>>
>> Use pairs of 100k trimmers, NOT physically attached. That way you
>can adjust
>> both the position and the width of the band. You could get a couple of
>> envelope followers per NE571 if you don't mind the price.
>>
>> Ken
>>
>> >Hi Ken
>> >
>> >If I wanted to use a series of your bandpass filter boards to build a
>> >fixed filter bank, how would you suggest I replace the dual Freq pots
>> >with resistors for best affect? Something similar to the DotCom fixed
>> >filter bank (http://www.synthesizers.com/q127.html) with bandwidth
>> >controls and individual band outputs. (I'm toying with the idea of
>> >building a patchable vocoder. Simple VCA's are available, I just need
>> >to find a small, simple envelope follower...)
>> >
>> >Larry T.
>> >
>> >
>> >
>> >The CGS Modular Synth home page: http://www.cgs.synth.net/
>> >
>> >Yahoo! Groups Links
>> >
>> >
>> >
>> >
>> _______________________________________________________________________
>> Ken Stone sasami@...
>> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
>> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>>
>
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>
>

_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>