[sdiy] Basic 4th order LP butterworth filter papers

[Paul Maddox]

Paul,

indeed, but for various reasons I'm avoiding surface mount.
I'm currently looking at the Thomas Henry VCF from "An Analogue
Synthesiser for the 21st Century", as it uses half of an SSM2164,
leaving two VCAs spare, one for main VCA and one for Resonance.

Next Challenge, a quad, voltage out, 12 bit DAC, with SPI and small
footprint :-)

Paul

On 6 February 2010 00:54, Paul Perry <pfperry at melbpc.org.au> wrote:
> The surface mount NE5517 or LM13700 is just the right size ;D
>
> paul perry Melbourne Australia
>
> ----- Original Message -----
>>
>> I've been following the simple VCA thread, and an LM13700 is too big for
>> me,
>> so I'm going to be playing with the single/dual transistor VCAs.
>
>
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