vpspect - compute a power spectrum of a signal

vpspect [-H] [if=<inputfile>] [of=<outputfile>] [oa=<value>] [-s] [-b] [-m] [-v] [-d] [-z] [m=<value>] [s=<value>] [-l]

Vpspect computes the power spectrum using the FFT. m= must be a power of 2. the output is a gnuplot file.

if=

input file

of=

output file

oa=

do not use

-s

no command option

-b

plot with box option

-m

plotmtv option (not tested)

-v

verbose option

-d

debug flag option

-z

delete dc term

m=

number of frequency terms (default 32) must be a power of 2

s=

frequency scale (default 1) s=30 for video frames

-l

set logscale for y

A. P. Reeves