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first moment of the spectrum

Hi all,
        Surely there must be some upper time limit over which the computation of
the first moment of the spectrum has any meaningful value to the
psychoacoustician.  For example, time-reversed versions of many stimuli are
perceptually very different, yet have identical first moments if computed
over the full duration of the stimuli.  Seems like one would have to
compute a running first moment over time to differentiate such stimuli on
the basis of their first moments.


Daniel J. Tollin, Ph.D.

University of Wisconsin-Madison FAX: (608)-265-3500
Department of Physiology                        Phone:(608)-262-6992
290 Medical Sciences Building           tollin@physiology.wisc.edu
1300 University Avenue                  http://www.physiology.wisc.edu/~tollin
Madison, WI 53706