(self, shape, outer_masks=1., separate_instruments=True)
Sample a batch of masks.

    Args:
      shape: sequence of length 4 specifying desired shape of the mask
      outer_masks: indicator of area within which to mask out
      separate_instruments: whether instruments are separated

    Returns:
      A batch of masks.
Sample a batch of masks.
Sample a batch of masks .
def __call__(self, shape, outer_masks=1., separate_instruments=True):
    """Sample a batch of masks.

    Args:
      shape: sequence of length 4 specifying desired shape of the mask
      outer_masks: indicator of area within which to mask out
      separate_instruments: whether instruments are separated

    Returns:
      A batch of masks.
    """
    raise NotImplementedError()
def __call__ ( self , shape , outer_masks = 1. , separate_instruments = True ) : raise NotImplementedError ( )