iir_theory.py 文件源码

def discrete2cont(r, p, c, dt=8e-9):
    """
    Transforms residues and poles from discrete time to continuous

    Parameters
    ----------
    r: residues
    p: poles
    c: constant term to be carried along
    dt: sampling time (s)

    Returns
    -------
    r, p with the transformation applied
    """
    r = np.array(r, dtype=np.complex128) / dt
    p = np.log(np.array(p, dtype=np.complex128)) / dt
    return r, p, c