[sdiy] Pole Dancing

Dave dlmanley at sonic.net
Wed Sep 19 20:05:44 CEST 2018

Note on Win10/chrome if you click on a slider you can coarse and fine tune with the page up/down keys and cursor (arrow) keys respectively.  This is probably true on other platforms/browsers as well. 

Don, can you dynamically show the transfer function polynomials (or just coefficients)?


On September 19, 2018 9:09:24 AM PDT, Harald <sdiy at haraldswerk.de> wrote:
>Found it. My fault. It needs an extra click within the graphic to show 
>the results. Only moving the sliders is not sufficient.
>Am 19.09.18 um 17:12 schrieb Harald:
>> Thanks Don. Interesting article. Unfortunately, for me the graphic
>> is mot working. No graphs to be seen, numbers are moving when the the
>> sliders are moved. Using Firefox 60.2  on Linux Leap 15.0. Any
>> Am 18.09.18 um 19:44 schrieb Donald Tillman:
>>> Hey folks,
>>> Since we've been talking about filters lately...
>>> There are several classes of active filters (state variable,
>>> etc.), but one that's especially interesting is where you start with
>>> passive RC filter, with poles on the real axis, and apply feedback, 
>>> liberating the poles into the wonderment of the complex plane.
>>> Here's a Javascript simulation I wrote of exactly that:
>>>      Root Locus Demo of Real Poles with Feedback
>>>      http://till.com/articles/poledance
>>> Have fun with it.  Tell me what you think.  Ask questions.  Explore.
>>>    -- Don
>>> -- 
>>> Donald Tillman, Palo Alto, California
>>> http://www.till.com
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