scipy.signal.freqresp¶
- scipy.signal.freqresp(system, w=None, n=10000)[source]¶
Calculate the frequency response of a continuous-time system.
Parameters : system : an instance of the LTI class or a tuple describing the system.
The following gives the number of elements in the tuple and the interpretation:
- 2 (num, den)
- 3 (zeros, poles, gain)
- 4 (A, B, C, D)
w : array_like, optional
Array of frequencies (in rad/s). Magnitude and phase data is calculated for every value in this array. If not given a reasonable set will be calculated.
n : int, optional
Number of frequency points to compute if w is not given. The n frequencies are logarithmically spaced in the range from two orders of magnitude before the minimum (slowest) pole to two orders of magnitude after the maximum (fastest) pole.
Returns : w : 1D ndarray
Frequency array [rad/s]
H : 1D ndarray
Array of complex magnitude values
