class_docstr: A class to normalize specgrams for each freq bin, channel.
class_docstr_tok: ["A","class","to","normalize","specgrams","for","each","freq","bin",",","channel","."]
code: def denormalize_op(self, x):
      a, b = self.load_and_decode()
      a = tf.constant(a, dtype=x.dtype)
      b = tf.constant(b, dtype=x.dtype)
      return (x - b) / a
  
imports: import io
  import os
  from absl import logging
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 5 for calling the SpecgramsFreqNormalizer obj's underlying member method code with example usage: obj.denormalize_op(x) and returns: unknown