class_docstr: A class for querying and converting data.
docstr: Converts data representation to waveforms.
code: def waves_to_data(self, waves):
      """Converts data representation to waveforms."""
      raise NotImplementedError
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from magenta.models.gansynth.lib import datasets
  from magenta.models.gansynth.lib import train_util
  from magenta.models.gansynth.lib.specgrams_helper import SpecgramsHelper
  import tensorflow.compat.v1
label_desc: Use image node_id 5 for calling the DataHelper obj's underlying member method code with example usage: obj.waves_to_data(waves) without return types