Messages in this thread | | | From | "Folkert van Heusden" <> | Subject | RE: Want a random entropy source? | Date | Sat, 28 Dec 2002 21:28:24 +0100 |
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> I was astonished to see that the resulting signal is a white-noise > pattern with a slight emphasis at the high end (when sampled at 44 > kilosamples per second). In short, it looks like diode noise with a > 4 kilohertz square wave thrown in. > "That suggests to me that this would make a fair source of random samples, > especially after you slot out the interfering signal. JB> How can you guarantee that you are sampling noise, though, what if a JB> sound card was picking up 50 Hz mains hum, for example, that would JB> de-randomise the data quite a bit.
Well, the 50hz from the mains isn't a perfect 50hz; it has random (yes) fluctuations.
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