opaqueice;194762 Wrote: 
> I'm a bit skeptical about counting those extra 30 dB below the noise...
> Shannon-Hartley is a theorem, full stop, end of story, right?
> Shannon Hartley deals with digital information on an analogue medium,
which analogue audio on a vinyl LP isn't.

It may be, that if you really wanted to store digital information on
vinyl, there is a more optimum choice of bandwidth vs SNR that could be
used - rather than that used for analogue audio, which is naturally
tailored to what we require to reproduce music.

The reason you can hear audio below the noise threshold, is that the
noise is random, and the brain is able to determine a pattern to the
audio and filter out the random noise.  Hence the fact that recordings
with quite a lot of tape hiss, can actually sound quite good in music
terms.


-- 
Patrick Dixon

www.at-tunes.co.uk
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