class_docstr: Helper functions to compute specgrams.
class_docstr_tok: ["Helper","functions","to","compute","specgrams","."]
docstr: Get the inverse mel transformation matrix.
docstr_tok: ["Get","the","inverse","mel","transformation","matrix","."]
code: def _mel_to_linear_matrix(self):
      """Get the inverse mel transformation matrix."""
      m = self._linear_to_mel_matrix()
      m_t = np.transpose(m)
      p = np.matmul(m, m_t)
      d = [
          1.0 / x if np.abs(x) > 1.0e-8 else x
          for x in np.sum(p, axis=0)
      ]
      return np.matmul(m_t, np.diag(d))
  
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 10 for calling the SpecgramsHelper obj's underlying member method code with example usage: obj._mel_to_linear_matrix() and returns: np