Extract the melody notes from an audio file and export them to MIDI and (optionally) JAMS files.

The script extracts the melody from an audio file using the Melodia algorithm, and then segments the continuous pitch sequence into a series of quantized notes, and exports to MIDI using the provided BPM. If the --jams option is specified the script will also save the output as a JAMS file. Note that the JAMS file uses the original note onset/offset times estimated by the algorithm and ignores the provided BPM value.

Note: Melodia can work pretty well and is the result of several years of research. The note segmentation/quantization code was written to be as simple as possible and will most likely not provide results that are as good as those provided by state-of-the-art note segmentation/quantization algorithms.

>python audio_to_midi_melodia.py infile outfile bpm [--smooth SMOOTH] [--minduration MINDURATION] [--jams]

For example:

>python audio_to_midi_melodia.py ~/song.wav ~/song.mid 60 --smooth 0.25 --minduration 0.1 --jams

For further help use:

>python audio_to_midi_melodia.py --help

• Requires python 2.7 (will most likely crash on python 3, untested)
• Melodia melody extraction Vamp plugin: http://mtg.upf.edu/technologies/melodia
• Librosa: https://github.com/librosa/librosa
• Vamp python module: https://pypi.python.org/pypi/vamp
• midiutil: https://code.google.com/p/midiutil/
• NumPy & SciPy: http://www.scipy.org/
• JAMS: https://github.com/marl/jams

Known to work with the following module versions on python 2.7:

• Librosa 0.5.1
• midiutil 1.2.1
• vamp 1.1.0
• jams 0.3.1
• numpy 1.13.1
• scipy 0.19.1