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radio/util/sinus.py

@@ -0,0 +1,30 @@
+#!/bin/env python
+
+from __future__ import print_function
+
+import math
+
+samples = 1024
+amplitudes = (32000, 0, 4000, 0, 4000)
+
+max = 0
+min = 0
+
+for i in range(samples):
+    sample = 0.0
+    for harmonic, amplitude in enumerate(amplitudes):
+        sample += math.sin(math.pi * 2 * i * (harmonic + 1) / samples) * amplitude / 2
+    sample = int(sample)
+    if sample > max:
+        max = sample
+    elif sample < min:
+        min = sample
+    print("%d," % sample, end=' ')
+    if i % 10 == 9:
+        print()
+
+print()
+print('Range is:', min, max)
+
+if max > 32767 or min < -32768:
+    print("Invalid range!")