Module « scipy.signal »

Fonction tf2sos - module scipy.signal

Signature de la fonction tf2sos

def tf2sos(b, a, pairing='nearest') 

Description

tf2sos.__doc__

    Return second-order sections from transfer function representation

    Parameters
    ----------
    b : array_like
        Numerator polynomial coefficients.
    a : array_like
        Denominator polynomial coefficients.
    pairing : {'nearest', 'keep_odd'}, optional
        The method to use to combine pairs of poles and zeros into sections.
        See `zpk2sos`.

    Returns
    -------
    sos : ndarray
        Array of second-order filter coefficients, with shape
        ``(n_sections, 6)``. See `sosfilt` for the SOS filter format
        specification.

    See Also
    --------
    zpk2sos, sosfilt

    Notes
    -----
    It is generally discouraged to convert from TF to SOS format, since doing
    so usually will not improve numerical precision errors. Instead, consider
    designing filters in ZPK format and converting directly to SOS. TF is
    converted to SOS by first converting to ZPK format, then converting
    ZPK to SOS.

    .. versionadded:: 0.16.0