opaqueice;194866 Wrote: 
> 
> Again, you seem to be rather confused.  We aren't interested in storing
> digital data on vinyl, whatever that means.  S-H tells us the maximum
> possible information capacity of a noisy analogue channel with
> bandwidth B, signal S, and Gaussian noise N.  It doesn't tell us what
> that best compression scheme is for a given piece of information - it
> just tells us how well we could ever do.
> 
Actually it's you that are confused.

The 'music' information stored on vinyl is in analogue form.  To apply
S-H you would need to convert it to digital form, at which point it
would become a representation of the original signal - not identical.

If you wanted to use the vinyl medium to store digital data, and to
maximise that data storage capacity, you should choose to record using
the best bandwidth and SNR -combination- that you can achieve (using
S-H) - which is not necessarily that which is used by the analogue
recording.  For example, it may be that if you halve the bandwidth, you
can make sufficient gains on the SNR that you can achieve on replay, to
more than compensate.

If you choose to compare apples and pears as you are doing, you will
always be confused.


-- 
Patrick Dixon

www.at-tunes.co.uk
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