code: def __init__(
      self, mu=256, int_type=numpy.int32, float_type=numpy.float32
  ):
      self.mu = mu
      self.int_type = int_type
      self.float_type = float_type
  
file_path: chainer/examples/wavenet/utils.py
imports: import random
  import librosa
  import numpy
  import chainer
label_desc: Use image node_id 1 to create a new MuLaw object from inherited base classes: object with example: obj = MuLaw(mu, int_type, float_type)