/usr/lib/python2.7/dist-packages/aubio/midiconv.py is in python-aubio 0.4.1-2+b2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | # -*- coding: utf-8 -*-
def note2midi(note):
" convert note name to midi note number, e.g. [C-1, G9] -> [0, 127] "
_valid_notenames = {'C': 0, 'D': 2, 'E': 4, 'F': 5, 'G': 7, 'A': 9, 'B': 11}
_valid_modifiers = {None: 0, u'♮': 0, '#': +1, u'♯': +1, u'\udd2a': +2, 'b': -1, u'♭': -1, u'\ufffd': -2}
_valid_octaves = range(-1, 10)
if type(note) not in (str, unicode):
raise TypeError, "a string is required, got %s" % note
if not (1 < len(note) < 5):
raise ValueError, "string of 2 to 4 characters expected, got %d (%s)" % (len(note), note)
notename, modifier, octave = [None]*3
if len(note) == 4:
notename, modifier, octave_sign, octave = note
octave = octave_sign + octave
elif len(note) == 3:
notename, modifier, octave = note
if modifier == '-':
octave = modifier + octave
modifier = None
else:
notename, octave = note
notename = notename.upper()
octave = int(octave)
if notename not in _valid_notenames:
raise ValueError, "%s is not a valid note name" % notename
if modifier not in _valid_modifiers:
raise ValueError, "%s is not a valid modifier" % modifier
if octave not in _valid_octaves:
raise ValueError, "%s is not a valid octave" % octave
midi = 12 + octave * 12 + _valid_notenames[notename] + _valid_modifiers[modifier]
if midi > 127:
raise ValueError, "%s is outside of the range C-2 to G8" % note
return midi
def midi2note(midi):
" convert midi note number to note name, e.g. [0, 127] -> [C-1, G9] "
if type(midi) != int:
raise TypeError, "an integer is required, got %s" % midi
if not (-1 < midi < 128):
raise ValueError, "an integer between 0 and 127 is excepted, got %d" % midi
midi = int(midi)
_valid_notenames = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B']
return _valid_notenames[midi % 12] + str( midi / 12 - 1)
def freq2note(freq):
from aubio import freqtomidi
return midi2note(int(freqtomidi(freq)))
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