def write_chord(f, note_freq, sound_leveler):
writer = Writer()
synthesizer = Synthesizer(osc1_waveform=Waveform.sine,
osc1_volume=sound_leveler(note_freq),
use_osc2=False)
wave = synthesizer.generate_chord([note_freq], 3.0)
writer.write_wave(f, wave)
def test_write_wave():
writer = Writer()
synthesizer = Synthesizer(osc1_waveform=Waveform.sine,
osc1_volume=1.0,
use_osc2=False)
wave = synthesizer.generate_constant_wave(440.0, 3.0)
writer.write_wave("./test_wave.wav", wave)
ok_("write_wave() succeeded.")
def save_melody(self, melody, bpm):
"""
Saves the melody as WAV
Saves each note individually and then concatenate then
in a sigle WAV file
Parameters
----------
melody : Melody
the melody that will be played
bpm : int
beats per minute that of the melody
"""
writer = Writer()
outfile = "melody.wav"
next_note = "note.wav"
data = []
for note in melody.notes:
sound = self.generate_waves(note, bpm)
if note == melody.notes[0]:
# Generates the first note
writer.write_wave(outfile, sound)
continue
writer.write_wave(next_note, sound)
infiles = [outfile, next_note]
for infile in infiles:
with wave.open(infile, 'rb') as w:
data.append([w.getparams(), w.readframes(w.getnframes())])
self.append_note(outfile, data)
# Deletes the note file
os.remove(next_note)
def main():
writer = Writer()
print("write chord sequence")
synthesizer = Synthesizer(osc1_waveform=Waveform.sine,
osc1_volume=1.0,
use_osc2=False)
chord = [
BASE * 2.0**(2 / 12.0), BASE * 2.0**(5 / 12.0), BASE * 2.0**(9 / 12.0),
BASE * 2.0**(12 / 12.0)
]
wave1 = synthesizer.generate_chord(chord, 1.0)
chord = [
BASE * 2.0**(2 / 12.0), BASE * 2.0**(7 / 12.0), BASE * 2.0**(11 / 12.0)
]
wave2 = synthesizer.generate_chord(chord, 1.0)
chord = [
BASE, BASE * 2.0**(4 / 12.0), BASE * 2.0**(7 / 12.0),
BASE * 2.0**(12 / 12.0)
]
wave3 = synthesizer.generate_chord(chord, 1.0)
writer.write_waves(os.path.join(DIR, "test.wav"), wave1, wave2, wave3)
def generate_wave_from_chord_objects(
chords: List[object],
filepath: str,
) -> None:
synthesizer = Synthesizer(osc1_waveform=Waveform.triangle,
osc1_volume=1.0,
use_osc2=False)
note_length: int = 2
root_pitch: int = 3
chord_waves: list = []
for chord in chords:
if type(chord) is list:
for c in chord:
notes: list = c.components_with_pitch(root_pitch=root_pitch)
chord_waves.append(
synthesizer.generate_chord(notes,
note_length / len(chord)))
else:
notes: list = chord.components_with_pitch(root_pitch=root_pitch)
chord_waves.append(synthesizer.generate_chord(notes, note_length))
writer = Writer()
writer.write_waves(filepath, *chord_waves)
from synthesizer import Synthesizer, Waveform, Writer
# ここの説明は 音作り を参照
synth = Synthesizer(osc1_waveform=Waveform.sine,
osc1_volume=1.0,
use_osc2=False)
# 一定音程の波形を生成する
wave = synth.generate_constant_wave(frequency=440.0, length=1.0)
# オーディオファイル出力用クラス
writer = Writer()
writer.write_wave("sine.wav", wave)