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From: "Richmond, James (James) ** CTR **" <richmondj@...>
Date: Thu Feb 14, 2002 1:37pm
Subject: RE: [LUG] Re: OT: 96kHz and stuff...

> --- In logic-users@y..., "Mark Lennox" <mark@e...> wrote:
> > I know most people cant hear above say 17kHz or so, and thus
> the argument
> > for 96kHz sampling rate seems ridiculous.
> ----
> perhaps by any scientific and measurable method its
> impossible to show that people can hear above such
> frequencies. also, our perceptions of what is and what isnt is
> usually based on our conscious awareness, it may well be that
> in some unconscious way we can indeed have a sense of what
> it is to experience these higher frequencies. ive heard so many
> comments regarding this - "it feels more airy", "it has more
> transparency", "the sound seems to have more life". these are of
> course only anecdotal and subjective opinions, yet they're the
> real experiences of real people, some of whom are highly
> regarded creative people! so, although a 96k sampling rate can
> seem ridiculous, it may well not be :-)

Well interestingly there are some studies that report the following:

96khz, 24bit (as opposed to 44.1/16bit) results in:
·much less "busy signal" break up - very good quality
· better separation of reverberation/room acoustics from instrument
output
· bass better balanced
· percussion (particularly cymbals) better
· some stereo image formation

BUT going up to 192khz, 24bit results in:

· detailed comparisons not yet performed on enough systems, but well
liked by (classical) artists after sessions
· no "busy signal" break up
· very good separation of reverberation and room acoustics
· strong stereo image formation, no observations on width so far

The bass problem is "commented on by experienced listeners, and shows up
particularly well on multi-mic'd rock music - it
can enable 192 kS/s material to be identified in absence of the analogue
source material for
comparison. The bass response of the ADC and DAC units in question is
flat down to 1 Hz, so there
is no question of it being due to bass roll off there."

The report is from http://www.dcsltd.co.uk/papers/effects.pdf and weel
worth a read.
DCSLTD are responsible for the worlds first 24bit A/D converter.

I'd be very interested in tracking a rock band on a new HD system @
192khz and comparing it with one tracked at 96khz to hear this for
myself.

>  Is this why
> > people claim that 96+kHz smapling rate is much better? Is it all
> in their
> > heads :)
> ---
> yes! name me one single perception which ISNT in the head!

Extra-sensory-perception would be the one that comes to mind.

James Richmond