Initial commit

stage/level6.py

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