[SAC-HELP] READSP, WRITESP and spectral ratio

[Shahar Kadmiel שחר קדמיאל]

  I am trying to compute spectral ratios of between a hefty number of  
files and I try it like this:

read /path_to_files/filenames*.sac
fft
writesp over

read /path_to_other_files/otherfiles*.sac
fft
writesp over

To this point every thing works well and I can even view with plotsp  
and see what I am doing.

I now want to divide filenames by other_files hence get the spectral  
ratio between them.

the * stands for sequential numbers and the number of file is the same  
in the nominator and denominator.

how do you suggest I go at this?
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