Power Spectrum
Use the 1D FFT > Power Spectrum menu option (FFTPSPEC GX) to calculate the log power spectrum of a channel and save it in a new database.
Log Power Spectrum dialog options
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Channel |
Name of the input channel in the current dataase. Script Parameter: FFTPSPEC.IN |
|
Power spectrum output channel |
Name of Power Spectrum output channel saved in a new output database. Script Parameter: FFTPSPEC.OUT |
|
[Set Sampling] |
Click this button to open the Set FFT Sampling Parameters dialog to set the channel data sampling parameters and ensure that the input data is appropriately sampled for 1D FFT. |
Application Notes
The output power spectrum will be the natural log of the power spectrum.
The fiducial increment will be cycles per original fiducial. The profile is extended to a power of 2 times the length and the wavenumber increment will be 1/(length * fid_increment).
See Also:
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