def generate_random_noise_mask(noise_density=0.15,
                               mean_noise_span_length=3.0,
                               seed1=None,
                               seed2=None):
  """Returns a function that generates a random noise mask."""
  def _f(generator):
    for example in generator:
      length = len(example)
      noise_mask = random_spans_noise_mask(
          length, noise_density=noise_density,
          mean_noise_span_length=mean_noise_span_length,
          seed1=seed1, seed2=seed2, example=example)
      yield (example, noise_mask)
  return _f
Returns a function that generates a random noise mask.
trax/data/inputs.py