[sdiy] Digital Noise, FYI

Colin f colin at colinfraser.com
Wed Feb 16 17:37:36 CET 2011


 
> > Richie B. suggested recently that 80KHz is a reasonable 
> minimum clock 
> > rate for noise which is flat (white) in the audio band.
> > That fits with my own experiments.
> 
> I would use higher clock-rates than that. A fixed 1 MHz or something.

Depending on your application, you might want to use a low rate, to get a
grungier sound.
I'll need to try to grab a sample of a clock-swept LFSR.
If you listen to a 909 noise generator output as the supply voltage falls to
zero, it sounds like a robot having a stroke ;-)

Cheers,
Colin f





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