impulse(system, X0=None, T=None, N=None)
If (num, den) is passed in for system, coefficients for both the numerator and denominator should be specified in descending exponent order (e.g. s^2 + 3s + 5 would be represented as [1, 3, 5]).
describing the system. The following gives the number of elements in the tuple and the interpretation:
- 1 (instance of lti)
- 2 (num, den)
- 3 (zeros, poles, gain)
- 4 (A, B, C, D)
Initial state-vector. Defaults to zero.
Time points. Computed if not given.
The number of time points to compute (if T is not given).
A 1-D array of time points.
A 1-D array containing the impulse response of the system (except for singularities at zero).
Impulse response of continuous-time system.
from scipy import signal
system = ([1.0], [1.0, 2.0, 1.0])
t, y = signal.impulse(system)
import matplotlib.pyplot as plt
plt.plot(t, y)
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