INNER CODE UNIT · Python

__parse_midi

jisungk/deepjazz · preprocess.py:20

def __parse_midi(data_fn):
    # Parse the MIDI data for separate melody and accompaniment parts.
    midi_data = converter.parse(data_fn)
    # Get melody part, compress into single voice.
    melody_stream = midi_data[5]     # For Metheny piece, Melody is Part #5.
    melody1, melody2 = melody_stream.getElementsByClass(stream.Voice)
    for j in melody2:
        melody1.insert(j.offset, j)
    melody_voice = melody1

    for i in melody_voice:
        if i.quarterLength == 0.0:
            i.quarterLength = 0.25

    # Change key signature to adhere to comp_stream (1 sharp, mode = major).
    # Also add Electric Guitar. 
    melody_voice.insert(0, instrument.ElectricGuitar())
    melody_voice.insert(0, key.KeySignature(sharps=1, mode='major'))

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