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# scipy.signal.impulse

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

  Impulse response of continuous-time system.

  Parameters : | system : LTI class or tuple If specified as a tuple, the system is described as `(num, den)`, `(zero, pole, gain)`, or `(A, B, C, D)`. X0 : array_like, optional Initial state-vector. Defaults to zero. T : array_like, optional Time points. Computed if not given. N : int, optional The number of time points to compute (if T is not given).
  Returns : | T : ndarray A 1-D array of time points. yout : ndarray A 1-D array containing the impulse response of the system (except for singularities at zero).

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