> "That suggests to me that this would make a fair source of random samples,
> especially after you slot out the interfering signal.
How can you guarantee that you are sampling noise, though, what if a
sound card was picking up 50 Hz mains hum, for example, that would
de-randomise the data quite a bit.
> "How many computers don't have cheap sound cards and CD-ROM drives?"
I have never understood how a 16-bit DAC or ADC can have noise above
96 dB. Surely _by definition_ a 16-bit DAC or ADC is one that does
not have noise above that level.
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