Module « scipy.signal »

Fonction kaiser_beta - module scipy.signal

Signature de la fonction kaiser_beta

def kaiser_beta(a) 

Description

kaiser_beta.__doc__

Compute the Kaiser parameter `beta`, given the attenuation `a`.

    Parameters
    ----------
    a : float
        The desired attenuation in the stopband and maximum ripple in
        the passband, in dB.  This should be a *positive* number.

    Returns
    -------
    beta : float
        The `beta` parameter to be used in the formula for a Kaiser window.

    References
    ----------
    Oppenheim, Schafer, "Discrete-Time Signal Processing", p.475-476.

    Examples
    --------
    Suppose we want to design a lowpass filter, with 65 dB attenuation
    in the stop band.  The Kaiser window parameter to be used in the
    window method is computed by `kaiser_beta(65)`:

    >>> from scipy.signal import kaiser_beta
    >>> kaiser_beta(65)
    6.20426