deerlab.fftspec¶

fftspec(V, t, mode='abs', zerofilling='auto', apodization=True)[source]¶

Computes the Fast-Fourier Transform (FFT) spectrum of the input signal V.

This function computes the FFT spectrum of the input signal V using the fft function from the numpy.fft module. The function allows to specify the type of spectrum to be returned, the zero-filling factor, and whether to apply a Hamming apodization window.

Parameters:

Varray_like: Signal to be processed.
tarray_like: Time axis, in microseconds.
modestring, optional: Type of spectrum to be returned ('real',``’imag’,’abs’), the default is ``'abs'.
zerofillingscalar or 'auto', optional: Number of elements in the output FFT spectrum, the default is 2*len(V).
apodizationboolean, optional: Use of a Hamming apodization window, the default is True.

Returns:

nundarray: Frequency axis, in megahertz
specndarray: FFT spectrum.