[LAD] Calculate R M S (Alfs Kurmis)

Fons Adriaensen fons at linuxaudio.org
Fri Feb 18 21:39:08 UTC 2011


On Fri, Feb 18, 2011 at 09:27:14PM +0000, Chris Cannam wrote:
> On 18 February 2011 21:19, Folderol <folderol at ukfsn.org> wrote:
> > Remembering my early training... In quality moving coil test meters this was
> > referred to as critical damping and not only gave the best response time but
> > also gave confidence that the meter needle wasn't sticking.
> 
> There's a really good user-interface insight in there -- the same one
> as exploited in touch-scrolling on certain famous handheld devices,
> the sort where scrolling "bounces" when you reach the end...

Yep. Never looked into this, but good filter design is probably
the essence of this sort of thing. The difference between 1st
and 2nd order would be really obvious for something like scrolling.

Ciao,

-- 
FA




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