FFT Filter

Filter (Lowpass or Highpass) a signal using a Fast Fourier Transform. The algorithm uses the Fourier harmonic closest to the requested cutoff frequency.

The base frequency of the FFT reconstruction is:

FREQ= 1/(total time)

The maximum frequency of the FFT is:

FREQ_MAS= FREQ * NumFrames / 2

The actual cutoff frequency is the closest multiple of the base frequency to the requested cutoff frequency

FFT_Filter

/Signal_Types= The type of signal to be processed

/Signal_Names= The names of the signals to be processed

/Signal_Folder= The name of the signal folder

/Result_Suffix= The ouput signal can have a suffix that can be applied to the original signal name

/Result_Folder= The data tree folder that the resulting signal is placed.

/Frequency_Cutoff= Requested Cutoff Frequency

/Lowpass= True= Lowpass - False= Highpass

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