That is correct, so 44.1 is not twice the standard, it corresponds 
roughly to the standard. 88.2 is twice the standard.
I have met  people who can hear 22K, which is roughly recording at 
48kHz. Twice that standard is 96kHz.

However, 48 has the added benefit of reproducing harmonic artifacts 
in the audible range.
Anyone who has heard wood recorders or brass is familiar with the 
extra tones, and if truncated, they can produce a kind of noise.
The interaction of the high harmonics creates audible color
If the range is too high, other types of noise are audible.
48K gives the extra harmonics without too many extra noise problems, 
and sounds very nice for harpsichord, lute, recorder, etc.
44.1 is an arbitrary standard created to squeeze more music on a CD.

NB: At 88.2, and 96, most of the unpleasant noise can be upsampled to 
the top of the range, and it becomes inaudible.
It disappears.
That's one reason which the extra frequencies are useful.
This is only useful if the noise of the other components is 
controlled. If you have bad mics, they will still sound bad.

All of these standards ping pong the sound between the left and right 
channels, which is not the way to do it, but that's what they do.

My LP player does 24kHz, and that is high enough for me. Love those 
old harpsichord recordings....

dt


At 10:34 AM 4/2/2008, you wrote:
>Actually, the standard accepted values for the human hearing range are
>approximately 20Hz to 20KHz. The upper limit declines with age...
>
>Grant
>
>On Wed, Apr 2, 2008 at 9:08 AM, David Tayler <[EMAIL PROTECTED]> wrote:
>
> >
> > >44.1 and 48 are not twice the frequency of human hearing, that
> > >distinction is reserved for 88.2 and 96.
> >
>
>
>--
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Grant Green - www.contrabass.com
>Heckelphone, Sarrusophone & Interesting Instruments
>
>--
>
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