class_docstr: Helper functions to compute specgrams.
class_docstr_tok: ["Helper","functions","to","compute","specgrams","."]
docstr: Converts stfts to mel-spectrograms.
docstr_tok: ["Converts","stfts","to","mel-spectrograms","."]
code: def stfts_to_melspecgrams(self, stfts):
      """Converts stfts to mel-spectrograms."""
      return self.specgrams_to_melspecgrams(
          self.stfts_to_specgrams(stfts)
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from magenta.models.gansynth.lib import spectral_ops
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 13 for calling the SpecgramsHelper obj's underlying member method code with example usage: obj.stfts_to_melspecgrams(stfts) and returns: self