48 lines
1.1 KiB
Python
48 lines
1.1 KiB
Python
"""
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Niveau 6
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Filtre audio
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"""
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import synth
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import math
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import random
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music = synth.Midi(32000)
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encoder = synth.Encoder()
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encoder.sampling = 32000
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instruments = [
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lambda t, f: round(math.sin(t * f * 2*math.pi)) + random.random() * 0.3,
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lambda t, f: math.sin(t * f * 2*math.pi),
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lambda t, f: math.sin(t * f * 2*math.pi)*0.6 + math.sin(t * f * 4*math.pi)*0.3 + math.sin(t * f * 8*math.pi)*0.1,
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lambda t, f: math.sin(t * f * 2*math.pi) + math.sin(t * f * 4*math.pi)/2,
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lambda t, f: t * f % 1 - 0.5,
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]
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delay1 = [0] * 1000
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delay2 = [0] * 3000
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delay3 = [0] * 5000
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phaser = [0] * 50
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t = 0
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for notes in music:
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total = 0
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for note in notes:
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total = total + instruments[note[0]](t/32000, 440 * 2**(note[1]/12)) * note[2]
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total = total * (math.sin(t/32000 * 20 * 2*math.pi)/8+7/8)
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total += delay1.pop(0) * 0.1
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total += delay2.pop(0) * 0.3
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total += delay3.pop(0) * 0.4
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delay1.append(total)
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delay2.append(total)
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delay3.append(total)
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lfo = math.sin(t/32000 * 0.2 * 2*math.pi)
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phaser.append(total)
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phaser.pop(0)
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total += phaser[int((lfo/2+0.5)*(len(phaser)-1))]
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encoder.write(total * 0.1)
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t = t + 1
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