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Subject: Re: Component for random number generator?
X-Newsreader: Microsoft Outlook Express 5.50.4920.2300
Date: Wed, 18 Dec 2002 16:52:10 GMT
NNTP-Posting-Date: Wed, 18 Dec 2002 11:52:10 EST
Organization: Cox Communications
"Ultimate Buu" wrote in message
> "RP Henry" wrote in message
> > "Ultimate Buu" wrote in message
> > news:firstname.lastname@example.org...
> > > Is there an easily obtainable electronic component designed for random
> > > number generation based on nuclear decay or something?
> > >
> But a noise diode has a Gaussian distribution (i.e. some frequencies occur
> more frequently in the noise than others). I want one in which each
> frequency has the same chance of occuring as all others.
"Gaussian" makes no statement about the frequency content of the signal. Any
Gaussian random variable convolved with a linear process produces a Gaussian
random variable. The linear process can be a filter with any frequency
response, so the output of a narrow bandpass filter driven by white Gaussian
noise is also Gaussian noise - but it's no longer white. In general, an
ideal Gaussian noise process is assumed to have a white noise spectrum. If
it doesn't, it can be often be represented as an ideal Gaussian noise
process with a white noise spectrum followed by a filter to shape the power
-- Mike --
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