def __init__(self, frets=12, strings=None):
StringInstrument.__init__(
self, frets, strings if strings else
[Pitch('G', 4),
Pitch('C', 4),
Pitch('E', 4),
Pitch('A', 4)])
def test_scale(self):
notes = [
(1, 'C4'), (2, 'D4'), (3, 'Eb4'), (4, 'F4'), (5, 'G4'), (6, 'A4'), (7, 'B4'),
(8, 'C5'), (9, 'D5'), (10, 'Eb5'), (11, 'F5'), (12, 'G5'), (13, 'A5'), (14, 'B5'), (15, 'C6'),
(-1, 'Bb3'), (-2, 'Ab3'), (-3, 'G3'), (-4, 'F3'), (-5, 'Eb3'), (-6, 'D3'), (-7, 'C3'),
(-8, 'Bb2'), (-9, 'Ab2'), (-10, 'G2'), (-11, 'F2'), (-12, 'Eb2'), (-13, 'D2'), (-14, 'C2'),
]
s = Scale(Pitch('C'), Scale.Mode('MelodicMinor', [ 0, 2, 3, 5, 7, 9, 11 ], [ 10, 8, 7, 5, 3, 2, 0 ]))
for i, note in notes:
self.assertEqual(str(s.get_pitch(i)), note)
s = Scale(Pitch('C'), Scale.Mode('MelodicMinor', [ 2, 1, 2, 2, 2, 2, 1 ], [ 2, 2, 1, 2, 2, 1, 2 ], as_intervals=True))
for i, note in notes:
self.assertEqual(str(s.get_pitch(i)), note)
def find_frets_for_note_on_string(self, note, string_num):
if isinstance(note, str):
note = Pitch(note)
note_diff = note.value % 12 - self.strings[string_num -
1].value % 12 + 12
if note_diff >= 12:
note_diff -= 12
return list(range(note_diff, self.num_frets + 1, 12))
def _add_line_to_lyrics(line, lyrics: List[Lyric], language: Language):
for c in language.gen_charset_from_line(line):
val = random.randrange(3)
lyric = Lyric(Note(Pitch(REV_NOTE_MAP[val])), value=c)
lyrics.append(lyric)
return lyrics
def __init__(self, frets=22, strings=None):
StringInstrument.__init__(
self, frets, strings if strings else [
Pitch('E', 2),
Pitch('A', 2),
Pitch('D', 3),
Pitch('G', 3),
Pitch('B', 3),
Pitch('E', 4)
])
def test_pitch_steps(self):
notes = [
'C', 'Db', 'D', 'Eb', 'E', 'F', 'Gb', 'G', 'Ab', 'A', 'Bb', 'B'
]
for note in Pitch.notes():
p = Pitch(note, 4, 440)
i = p.value % 12
for step in range(-40, 60):
self.assertEqual(
p.transpose(step),
Pitch(notes[(i + step) % 12], 4 + math.floor(
(i + step) / 12)))
self.assertEqual(p.transpose(1), p.sharp())
self.assertEqual(p.transpose(-1), p.flat())
self.assertEqual(p.transpose(12).freq(), p.freq() * 2)
self.assertEqual(p.transpose(12).octave, p.octave + 1)
def pitch(self):
return Pitch(self.name, self.octave + 4)
parser.add_argument(
'-m',
'--mode',
default='HarmonicMinor',
help=
'The target mode for the song (e.g. HarmonicMinor, Major, Mixolydian).'
)
parser.add_argument(
'-t',
'--tempo',
default=60,
help='The tempo for the song in beats per minute (e.g. 60).')
args = parser.parse_args()
if args.mode in Scale.modes:
if args.root and Pitch.valid(args.root):
scale = Scale(Pitch(args.root, 2), args.mode)
else:
print('Valid roots are', [root for root in Pitch.notes()])
sys.exit()
elif args.mode not in Scale.modes or len(scale.mode.ascending) != 7:
modes = []
for mode in Scale.modes:
if len(Scale.modes[mode].ascending) == 7:
modes.append(mode)
print('Valid modes are', modes)
sys.exit()
staff = Staff(tempo=int(args.tempo))
for n in [8, 6, 5, 7, 8, 9, 7, 8]:
pitch = scale.get_pitch(n)
def test_string_instrument(self):
instr = StringInstrument(
24, [Pitch('A', 1),
Pitch('B', 1),
Pitch('C', 2),
Pitch('D', 2)])
self.assertEqual(instr.pluck(2, 14), Pitch('C##', 3))
self.assertEqual(
instr.strum(),
[Pitch('D', 2),
Pitch('C', 2),
Pitch('B', 1),
Pitch('A', 1)])
self.assertEqual(
instr.strum([-1, 0, 2, 1]),
[Pitch('C', 2), Pitch('C#', 2),
Pitch('A#', 1)])
self.assertEqual(instr.find_frets_for_note_on_string('A', 4),
[0, 12, 24])
self.assertEqual(instr.find_frets_for_note_on_string('C', 4), [3, 15])
self.assertEqual(instr.find_frets_for_note_on_string('A', 2), [9, 21])