pfarrell;345632 Wrote: 
> TheLastMan wrote:[color=blue]
> Its a very special LP that actually has any music signal over 20kHz,
> and
> few cartridges can pick it up. Of course, true vinylphiles will argue
> with me.
> 

With most music in the last 25 years being digitally mastered, you
would probably find that the encoding used on the digital master tape
used to record the LP was probably incapable of recording frequencies
that high anyway, particularly in the early days of digital.  Oh for
the days of AAA mastered vinyl LPs. In those days you could kid
yourself you could actually hear those higher frequencies! 

A sampling rate of 44.1khz will give you two pieces of information for
each "wave" of a 20khz signal.  That is enough to encode, say, the peak
and the trough of a sine wave, although it could, if badly timed, encode
halfway up and halfway down - which would be no wave at all!

I would say that 4 samples are probably the minimum needed to encode
peak to trough of a wave with reasonable accuracy, so an 88khz sample
rate gives you just enough for 20khz whereas 44khz is probably only
enough to capture 10khz with any accuracy.

As I said, I am not sure it will make any audible difference - but it
is worth a try.  There are lots of stages in the recording - encoding -
replay path, each of which could add a little to the degredation of the
musical signal, but I think the biggest contributor is probably the
quality of the analogue output from the Receiver.  I won't improve that
unless I go for a standalone DAC or the Transporter.  Neither of which
is a financial possibility at the moment.


-- 
TheLastMan

Matt

SB Duet, Synology Diskstation 107+ with FW 2.0-0600
SqueezeCenter 7.2 and SSODS 3 beta 15.
Naim 42/110 amp, B&W CM2 speakers.
LPs ripped using Linn LP12, Naim 72/Hi-cap, M-Audio 2496.
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