[sdiy] Filter Help

Jason Proctor jason at redfish.net
Fri Feb 23 09:10:22 CET 2018


Dr Etch-a-Sketch aka David Dixon is the authority regarding 2164s,
hopefully he will chime in soon.



On Thu, Feb 22, 2018 at 11:26 PM, Julian Schmidt <elfenjunge at gmx.net> wrote:

> Hi
>
> Normally the shruthi filters all work like a charm and should track more
> or less ok. Don't expect a full range sine osc though ;)
> Which design are you looking at? Since it is a 2164 design probably the
> SVF?
> It would help to see your schematic.
> And remember the Shruthi has a 5V maximum CV. So probably the stock design
> has something else than 1V/Oct otherwise the CV would be limited to 5
> octaves. But thats just speculation on my side.
>
> julian
>
> Am 23.02.2018 um 01:41 schrieb Tim Ressel:
>
>> Hi
>>
>> I am trying to get a 2164 SVF design to behave. I can't seem to get the
>> frequency scaling right. It is very sensitive to CV. I thought you can make
>> a volt/oct filter out of it. btw I am going off the Shruti schematic.
>> Anyone got some stick time on this puppy?
>>
>>
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