[LAU] Open Source MIDI control surface

Fons Adriaensen fons at kokkinizita.net
Tue Dec 2 17:28:56 EST 2008

On Tue, Dec 02, 2008 at 04:41:10PM -0500, nescivi wrote:

> > well, 10 bit is ok, but i would prefer a more accurate resolution.
> That's not what I am getting at.
> If your sensor's analog output value has less than 0.097656 % (1/1024 * 100%) 
> noise, then, yes, you need a more accurate ADC. Otherwise there is no point.

Depends on the noise bandwidth and sample rate. 
A simple 2nd order, critically damped LPF can
do wonders. If you buffer the sensor with an
opamp, this takes just two resistors and two
condensors. I'd use it anyway.



Laboratorio di Acustica ed Elettroacustica
Parma, Italia

Lascia la spina, cogli la rosa.

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