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# scipy.signal.impulse

`scipy.signal.``impulse`(system, X0=None, T=None, N=None)

  Impulse response of continuous-time system.

  Inputs:

  > system – an instance of the LTI class or a tuple with 2, 3, or 4
  >   elements representing (num, den), (zero, pole, gain), or (A, B, C, D) representation of the system.

  > X0 – (optional, default = 0) inital state-vector. T – (optional) time points (autocomputed if not given). N – (optional) number of time points to autocompute (100 if not given).

  Ouptuts: (T, yout)

  > T – output time points, yout – impulse response of system (except possible singularities at 0).

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