Spectra - Calculate spectrum
Spectra < in.h [in= out= j1= j2= j3= d1= phase=] > out.H
on output (n1=(nearest power of two)/(2*j1)+1)
like Window
4=default=real input; 8=optional complex input
like Window but spectra will be added, not subsampled, effectively smoothing the spectra
on output will be replaced by j1/2*dt
output auxiliary file with phase spectra
mode=all defaults j2=n2 & j3=n3 to reproduce functionality of old Spectrum program (not the default)
Obtain averaged amplitude spectra. Spectrum on 1=axis, smoothing on all axes.
seis/filter