notebook_utils.py 文件源码

def play_sequence(sequence,
                  synth=midi_synth.synthesize,
                  sample_rate=_DEFAULT_SAMPLE_RATE,
                  colab_ephemeral=True,
                  **synth_args):
  """Creates an interactive player for a synthesized note sequence.

  This function should only be called from a Jupyter or Colab notebook.

  Args:
    sequence: A music_pb2.NoteSequence to synthesize and play.
    synth: A synthesis function that takes a sequence and sample rate as input.
    sample_rate: The sample rate at which to synthesize.
    colab_ephemeral: If set to True, the widget will be ephemeral in Colab, and
      disappear on reload (and it won't be counted against realtime document
      size).
    **synth_args: Additional keyword arguments to pass to the synth function.
  """
  array_of_floats = synth(sequence, sample_rate=sample_rate, **synth_args)

  try:
    import google.colab  # pylint: disable=unused-import,unused-variable,g-import-not-at-top
    colab_play(array_of_floats, sample_rate, colab_ephemeral)
  except ImportError:
    display.display(display.Audio(array_of_floats, rate=sample_rate))