librosa/filters.py
def __float_window(window_spec):
    '''Decorator function for windows with fractional input.

    This function guarantees that for fractional `x`, the following hold:

    1. `__float_window(window_function)(x)` has length `np.ceil(x)`
    2. all values from `np.floor(x)` are set to 0.

    For integer-valued `x`, there should be no change in behavior.
    '''

    def _wrap(n, *args, **kwargs):
        '''The wrapped window'''
        n_min, n_max = int(np.floor(n)), int(np.ceil(n))

        window = get_window(window_spec, n_min)

        if len(window) < n_max:
            window = np.pad(window, [(0, n_max - len(window))],
                            mode='constant')

        window[n_min:] = 0.0

        return window

    return _wrap
def __float_window(window_spec):
    '''Decorator function for windows with fractional input.

    This function guarantees that for fractional `x`, the following hold:

    1. `__float_window(window_function)(x)` has length `np.ceil(x)`
    2. all values from `np.floor(x)` are set to 0.

    For integer-valued `x`, there should be no change in behavior.
    '''

    def _wrap(n, *args, **kwargs):
        '''The wrapped window'''
        n_min, n_max = int(np.floor(n)), int(np.ceil(n))

        window = get_window(window_spec, n_min)

        if len(window) < n_max:
            window = np.pad(window, [(0, n_max - len(window))],
                            mode='constant')

        window[n_min:] = 0.0

        return window

    return _wrap
Decorator function for windows with fractional input.

    This function guarantees that for fractional `x`, the following hold:

    1. `__float_window(window_function)(x)` has length `np.ceil(x)`
    2. all values from `np.floor(x)` are set to 0.

    For integer-valued `x`, there should be no change in behavior.