On 2011-07-27, Jörn Nettingsmeier wrote:
my gut feeling had always been that in the presence of HF cues, you
can get away with sloppy LF cues (as in, drive all your subs in mono
for maximum ooomph, but the kick sound of the kick drum will make sure
it's localised properly). maybe i was wrong. or maybe their
band-limited noise is just too artificial...
That's my thought as well, but perhaps for a different reason.
This goes back to the debates over whether ultrasonics can actually be
heard, and so whether high sampling rates are beneficial beyond double
the frequency cutoff of human hearing. Everybody can already agree that
sustained ultrasonic sinusoids cannot be heard even unconsciously above
some threshold, which lies around 30kHz or a bit over it. But at least
to my knowledge, nobody's really settled the question of whether they
might be heard in combination with lower frequencies. That is, nobody's
ever ruled out the possibility that in addition to linear, frequency
sensitive analysis, our ears/brains might be doing something nonlinear
that isn't being as consciously heard as a clear pitch, but which still
affects, say, spatial hearing. (There is even some evidence in support
of this, and certainly we know the auditory system as a whole is very
nonlinear at each and every stage.)
The best alternative/nut theory I've heard is that we might do
independent, time-domain analysis and between-the-ears correlation for
transients, quite regardless of frequency, while in parallel doing
frequency sensitive analysis for sustained, spectrally sharp stuff.
(There is some evidence for this in early dichotic listening experiments
utilizing analog hardware and synthetic impulses reaching beyond 150kHz.
They yield directional uncertainty intervals well below what is
attainable when utililizing bandlimited waveforms; a telltale sign of
nonlinear processing.)
So, is it sure that such processes, if in fact real, couldn't be at play
within the audible band as well? That'd for instance mean that frequency
dependent phase delays which cannot be heard in steady state would
suddenly still show up with transients, in particular in a
dichotic/binaural setting.
--
Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front
+358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2
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