soundbox/generate.py

54 lines
1.2 KiB
Python
Raw Normal View History

2020-12-17 22:08:07 +00:00
import soundbox
def sine(dur, freq, value=1):
return soundbox.envelope(
attack=.01, decay=.2, release=.2,
signal=soundbox.sine(dur, freq, value))
def square(dur, freq, value=1):
return soundbox.envelope(
attack=.01, decay=.2, release=.2,
signal=soundbox.square(dur, freq, value))
signal = soundbox.silence(9)
chords_l = (
(('do', 2),),
(('sol', 2),),
(('la', 2),),
(('sol', 2),),
(('do', 2),),
(('sol', 2),),
(('la', 2),),
(('sol', 2),),
)
chords_r = (
(('do', 3), ('mi', 3), ('sol', 3)),
(('sol', 3), ('si', 3), ('re', 4)),
(('la', 3), ('do', 4), ('mi', 4)),
(('fa', 3), ('la', 3), ('do', 4)),
)
for shift in (.5, 4.5):
for i in range(len(chords_l)):
soundbox.add_signal(signal, start=i / 2 + shift,
source=soundbox.chord(
instr=square, dur=.6,
freqs=soundbox.note_freqs(chords_l[i]),
value=.05
))
for i in range(len(chords_r)):
soundbox.add_signal(signal, start=i + shift,
source=soundbox.chord(
instr=sine, dur=1.1,
freqs=soundbox.note_freqs(chords_r[i]),
value=.6
))
soundbox.save_signal('out.wav', signal)