aspcore.fouriertransform.iczt_unit_circle

aspcore.fouriertransform.iczt_unit_circle(freq_sig, N, w_angle, a_angle)

Inverse Chirp-z transform on the unit circle

Parameters:

• freq_sig (np.ndarray of shape (M, ...)) – The frequency signal to be transformed. The transform is applied to the first axis

• N (int) – The number of time samples to compute.

• a_angle (float) – The starting point for the chirp z transform. The value a in the chirp z transform is a complex number defined as exp(2j * pi * a_angle).

• w_angle (float) – The base for the frequency bins. The value w in the chirp z transform is a complex number defined as exp(2j * pi * w_angle).