Module « scipy.signal »

Fonction symiirorder1 - module scipy.signal

Signature de la fonction symiirorder1

Description

symiirorder1.__doc__

out = symiirorder1(input, c0, z1, precision=-1.0)

    Implement a smoothing IIR filter with mirror-symmetric boundary conditions
    using a cascade of first-order sections.  The second section uses a
    reversed sequence.  This implements a system with the following
    transfer function and mirror-symmetric boundary conditions::

                           c0              
           H(z) = ---------------------    
                   (1-z1/z) (1 - z1 z)     

    The resulting signal will have mirror symmetric boundary conditions as well.

    Parameters
    ----------
    input : ndarray
        The input signal.
    c0, z1 : scalar
        Parameters in the transfer function.
    precision :
        Specifies the precision for calculating initial conditions
        of the recursive filter based on mirror-symmetric input.

    Returns
    -------
    output : ndarray
        The filtered signal.