Initial commit

level5.py

@@ -0,0 +1,70 @@
+"""
+Niveau 5
+Nouveaux instruments
+"""
+
+import synthlib, math, sys
+
+rate = 44100
+
+def sine(t, f):
+	return math.sin(t/rate*f*2*math.pi)
+
+def cosine(t, f):
+	return math.cosin(t/rate*f*2*math.pi)
+
+def sine2(t, f):
+	return math.atan(math.sin(t/rate*f*2*math.pi))
+
+def sine3(t, f):
+	return (sine(t,f) - sine2(t,f))*math.pi
+
+def sine4(t, f):
+	return (cosine(t,f) - sine3(t,f))*2
+
+polynome = [32, 30, 8, 4, 2, 1]
+lpolynome = len(polynome)
+spolynome = sum(polynome)
+def polynomial(t, f):
+	return sum(j*math.sin(t/rate*f*2*math.pi*i) for i,j in enumerate(polynome)) / spolynome
+
+music = synthlib.midi()
+
+active = {}
+wait = 0
+tt = 0
+t = 0
+loop = True
+
+sound_encoder = synthlib.SoundEncoder(env={
+	"sampling": rate,
+	"signed": True,
+	"verbose": False,
+	"bits": 32,
+	"msbfirst": True,
+	"tempo": 130
+})
+while loop:
+	if wait == 0:
+		while True:
+			event = music[tt]
+			tt += 1
+			if event.type == synthlib.Note:
+				if event.velocity == 0:
+					if event.number in active:
+						active.pop(event.number)
+				else:
+					active[event.number] = event.velocity
+					#sys.stderr.write(str(event.velocity)+"\n")
+			elif event.type == synthlib.Wait:
+				wait = int(event.value*rate/2)
+				break
+			elif event.type == synthlib.End:
+				loop = False
+				break
+	else:
+		wait -= 1
+	
+	sound_encoder.write_sample(sum([active[number]*polynomial(t, 440*2**(number/12)) for number in active])/max(1,len(active)))
+	t += 1
+