[sdiy] Digital filtering of pot input

Tom Wiltshire tom at electricdruid.net
Sat Dec 3 14:41:43 CET 2016

That looks very interesting, Andrew. Can you tell us more? How does the "dynamic" part work? (Since we know what two-pole filters are already!)


On 3 Dec 2016, at 09:40, Andrew Simper <andy at cytomic.com> wrote:

> If you have enough DSP to throw at multiple boxcar filters and an IIR
> you may be interested in a dynamic 2 pole low pass filtering approach
> I've designed which gives these kinds of results:
> www.cytomic.com/files/dsp/dynamic-smooting.png
> It takes 2 multiples, 6 additions, 3 bit shifts and an absolute value
> for fixed point, or 5 multiplies, 6 additions and an absolute value
> for float. Please let me know if this sort of algorithm may be
> appropriate.
> All the best,
> Andrew

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