[sdiy] Digital noise generation

[Tim Ressel]

Yo,

I believe it has to du with distribution. I saw a
blurb (in EDN?) about summing together 12 analog noise
gens to make the distribution gaussian instead of, um
, whatever. Perhaps the extra taps is messing with the
distribution?

--Tim Ressel

--- Antti Huovilainen <ajhuovil at cc.hut.fi> wrote:
> Hi again
> 
> I partially solved the problem. Using any two tap
> noise generator sounded 
> quite bad, but testing with 24 bit 4 tap generator
> produced much better 
> results. If anyone has insight to why this is so,
> please tell.
> 
> I have uploaded the matlab code and example wavs to
> http://www.acoustics.hut.fi/~ajhuovil/noise/
> 
> goodnoise.wav = 24 bit 4 tap noise
> badnoise.wav = 23 bit 2 tap noise
> rand.wav = matlab's internal random number
> generator. This one still 
> sounds slightly smoother than goodnoise.wav.
> 
> Antti
> 
> "No boom today. Boom tomorrow. There's always a boom
> tomorrow"
>    -- Lt. Cmdr. Ivanova
> 


	
		
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