Initial commit

loop.py

@@ -0,0 +1,29 @@
+import synthlib, math, sys
+
+rate = 44100
+
+# freq is multiplied by factor every period
+def sine(t, period, decay, factor, full_period):
+	tt = (t + decay) % full_period
+	if tt == 0:
+		volume = 0
+	elif tt <= full_period/2:
+		volume = tt/(full_period/2)
+	else:
+		volume = (full_period-tt)/(full_period/2)
+	freq_factor = 27.5*factor**(tt/period)
+	return volume**2*math.sin(tt*freq_factor/rate*2*math.pi)
+
+nb = 3
+
+sound_encoder = synthlib.SoundEncoder(env={
+	"sampling": rate,
+	"signed": True,
+	"verbose": False,
+	"bits": 32,
+	"msbfirst": True,
+	"tempo": 130
+})
+for t in range(rate*16):
+	sound_encoder.write_sample(sum([sine(t, rate, i*rate/nb*4, 2, rate*4) for i in range(nb)])/nb)
+