in augment/effects.py [0:0]
def __call__(self, x, src_info, dst_info):
noise_instance = self.noise_generator()
assert noise_instance.numel() == x.numel(
), 'Noise and signal shapes are incompatible'
noised = self.coeff * x + (1.0 - self.coeff) * noise_instance.view_as(x)
return noised, src_info, dst_info