Re: Autocorrelation

[Alexandra Hettergott <a.hettergott@xxxxxxxxxx>]

Peter Cariani <peter@epl.meei.harvard.edu> wrote (in part) :
>The alternative general hypothesis is that frequency representation is
>based not on spatial profiles of filter activation, but by an analysis
>of the temporal patterns that are produced by the filters. The
different
>tunings are then not the vehicle for fine frequency discrimination, but
>the means by which multiple frequencies/periodicities/auditory objects
>can be simultaneously represented [...]
Humble me (and re music) again, just to briefly state that
a) I do consider your above hypothesis plausible also with regard to
timbral distinctability (by way of envelope-related temporal patterns),
as e.g., in different simultaneously playing musical instruments ;
b) -- since you were asking about "our" overall views concerning pitches
of resolved and unresolved harmonics : (modestly) I would not imagine
two qualitatively different kinds of neural mechanisms but a single one
rather, showing yet a change in resolvability becoming "disrupted" in
both directions of very high/low periodicities, respectively (i.e.,
integrating/disintegrating)
(in which respect, e.g., towards the "lower" end, as mentioned, I do see
also some relation regarding the inversely related (ir)resolvability in
low frequencies (becoming "pulse-like") vs. that of consecutive pulses
(becoming "pitch-like", e.g., with about 20pps)) ;
c) what you are describing as
>the more intervals are produced by phase-locking to individual partials
>(which depends on phase-locking), the better their representation in
the
>population-interval distribution and the greater their resolvability.
does make sense to me in sort of different (periodic) "grids" to be
applied.
.....
Sincerely (sorry),
Alexandra Hettergott.