Thread: operations in the frequency domain

Started: 2008-01-22 22:09:49
Last activity: 2008-01-23 01:01:14
Topics: SAC Help
Pierre Arroucau
2008-01-22 22:09:49
Hello,
How is it possible to perform operations in the frequency domain with sac?
For instance, once the fft of two time series have been computed, how
can I divide one spectra by the other?


  • andreas wessel
    2008-01-23 01:01:14
    Hi Pierre,

    I think some operations can only be done in the time domain. But with
    "writesp" one can write the spectra into files that can be read as if
    they were regular time domain files.
    Something like:

    fft
    writesp AM signal.e signal.n
    r signal.e signal.n
    *now operations..*
    (there might be a better way to do this)

    ciao
    Andreas


    On Jan 22, 2008 4:09 PM, Pierre Arroucau <pierre.arroucau<at>anu.edu.au> wrote:
    Hello,
    How is it possible to perform operations in the frequency domain with sac?
    For instance, once the fft of two time series have been computed, how
    can I divide one spectra by the other?

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