spec.pgram (PR#7124)

1 message · stoffer@pitt.edu

Wed, Jul 21, 2004 5:47 PM #

Full_Name: david stoffer
Version: 1.9.0
OS: win xp pro
Submission from: (NULL) (67.165.78.88)


spec.pgram is supposed to plot the periodogram values in dB, i.e., 10log10(.).
the value on the graph look ok, but the y-axis, plotted on dB scale NEVER shows
negative values. in other words,  all values are shown as positive.