This data set,
voice.five
, is a list suitable as input for the
image
command.
The
z
component of the list is a matrix that is
92
by
64
.
Each column of
z
represents a periodogram over a short period of time; i.e., adjacent columns have half of their observations in common.
The rows of
z
represent time, and the values in
z
are the intensity of a frequency at a given time.
The data are courtesy of James Schimert, University of Washington.