[Arny Krueger]

"ScottW" wrote in message
ups.com
On Aug 29, 10:37 am, John Byrns
wrote:
In article
. com,
Bret Ludwig wrote:

On Aug 29, 10:28 am, "Arny Krueger"
wrote:
"Bret Ludwig" wrote in message

oups.com

Some people prefer the treble digital artifacts of CD.

There ain't no such thing.

But, unfortunately, there are. CD sample rate is NOT
high enough, and that's the consensus view of hundreds
of pros as well as in compliance with the generally
accepted rules of bandwidth.

Exactly what is the CD sample rate not high enough for,
and how do you justify that statement? If the audio is
first run through a 20 kHz brick-wall filter the CD
sample rate is plenty high. Brick-wall filters can be
built with today's digital techniques that do not
contribute phase distortion to the filtered signal.

How does one implement an anti-aliasing filter on the
input before a signal is digitized.....digitally?

Before oversampling, brick-wall filtering was done in the analog domain,
with complex filters.

The brick wall filter in the CDP-101 had about 100 components (mostly coils
and capacitors) for 2
channels.

What oversampling does is put the brick-wall filter into the digital domain,
but running at a far higher sample rate then say 44 KHz. Relatively simple
analog filters running at far higher frequencies are then sufficient.