[Andrew Haley]

ScottW wrote:
On May 3, 5:20?pm, "Arny Krueger" wrote:
On Wed, 2 May 2012 14:48:03 -0700, Scott wrote
(in article ):

On May 2, 10:38am, ScottW wrote:
But it doesn't have to start at 16/44. Recording at low sample rates
requires aggressive anti-alias filters which can have audible effects.

What's a low sample rate in this context? ?44 Khz is disqualified
because it puts all such artifacts outside of the audible range?


Is that a comment or a question? Are you claiming that high-order
low pass filters with 20 khz cutoff frequency won't have any audible
effects in the passband?

The paper I linked says otherwise.

It doesn't really. Some filters aren't very good, and could have
audible effects, but this paper doesn't attempt to find out which ones
they are. It says "More work is required to evaluate the limits on
the perception of the echo effects described here." and "It would seem
that some kind of threshold test on the audibility of pre and
post-echo pairs is required."

We already know that some really bad filters are audible, but these
are worse than those used in any commercial DAC.

Andrew.