MIDI to notes

midi2notes.py

from mido import MidiFile
import mido
import sys


def ntof(n):
	return 440*(2**((n-69)/12))
def main():

	mid = MidiFile(sys.argv[1])

	print("ticks per beat:",mid.ticks_per_beat)
	#print("us per beat:",)
	tempo = 120
	for x in mid:
		d = x.dict()
		if type(x) is mido.midifiles.meta.MetaMessage:
			if d.get("type") == "set_tempo":
				print("tempo",d["tempo"],d)
				tempo = d["tempo"]
			else:
				print("other",d)
		else:
			n = d.get("note")
			if n is not None:
				print(d["type"],ntof(n),mido.tick2second(d["time"],mid.ticks_per_beat,tempo))
			else:
				print(x)

if __name__ == '__main__':
	print(ntof(127))
	main()