57 lines
1.3 KiB
Python
57 lines
1.3 KiB
Python
import soundbox
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import sys
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if len(sys.argv) != 2:
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print(f"""Utilisation: {sys.argv[0]} [output]
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Génère un morceau au synthétiseur dans le fichier [output].""")
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sys.exit(1)
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output_file = sys.argv[1]
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def sine(dur, freq, value=1):
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return soundbox.envelope(
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attack=.01, decay=.2, release=.2,
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signal=soundbox.sine(dur, freq, value))
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signal = soundbox.silence(10)
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chords_l = (
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(('do', 2),),
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(('sol', 2),),
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(('la', 2),),
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(('sol', 2),),
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(('do', 2),),
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(('sol', 2),),
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(('la', 2),),
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(('sol', 2),),
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)
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chords_r = (
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(('do', 3), ('mi', 3), ('sol', 3)),
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(('sol', 3), ('si', 3), ('re', 4)),
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(('la', 3), ('do', 4), ('mi', 4)),
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(('fa', 3), ('la', 3), ('do', 4)),
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)
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for shift in (.5, 4.5):
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for i in range(len(chords_l)):
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soundbox.add_signal(signal, start=i / 2 + shift,
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source=soundbox.chord(
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instr=sine, dur=.8 if shift == 4.5 and i == 7 else .4,
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freqs=soundbox.note_freqs(chords_l[i]),
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value=.4
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))
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for i in range(len(chords_r)):
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soundbox.add_signal(signal, start=i + shift,
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source=soundbox.chord(
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instr=sine, dur=1.1,
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freqs=soundbox.note_freqs(chords_r[i]),
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value=.4
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))
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soundbox.save_signal(output_file, signal)
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