message: linting; 80 chars per line
diff: @@ -105,12 +105,13 @@ def linear_to_mel_weight_matrix(num_mel_bins=20,
  `[lower_edge_hertz, upper_edge_hertz]` on the [mel scale][mel].
  This function follows the [Hidden Markov Model Toolkit
  - (HTK)](http://htk.eng.cam.ac.uk/) convention, defining the mel scale in terms of
  - a frequency in hertz according to the following formula:
  + (HTK)](http://htk.eng.cam.ac.uk/) convention, defining the mel scale in
  + terms of a frequency in hertz according to the following formula:
  $$\textrm{mel}(f) = 2595 * \textrm{log}_{10}(1 + \frac{f}{700})$$
  - In the returned matrix, all the triangles (filterbanks) have a peak value of 1.0.
  + In the returned matrix, all the triangles (filterbanks) have a peak value
  + of 1.0.
  For example, the returned matrix `A` can be used to right-multiply a
  spectrogram `S` of shape `[frames, num_spectrogram_bins]` of linear
  