Add code

.gitignore

@@ -152,3 +152,4 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
+*.raw

signalgen.py

@@ -0,0 +1,50 @@
+import math
+
+
+class SignalGenerator:
+    def __init__(
+        self,
+        frequency,
+        amplitude,
+        sample_rate,
+        output_range=(-1, 1),
+        convert_to_int=False,
+    ):
+        self.phase = 0
+        self.frequency = frequency
+        self.amplitude = amplitude
+        self.sample_rate = sample_rate
+        self.output_range = output_range
+        self.convert_to_int = convert_to_int
+
+    def sample(self):
+        sample = math.sin(self.phase * math.tau) * self.amplitude
+        self.phase += self.frequency / self.sample_rate
+        self.phase %= 1
+        return (int if self.convert_to_int else float)(
+            remap(sample, -1, 1, self.output_range[0], self.output_range[1])
+        )
+
+    def generate_samples(self, samples):
+        return [self.sample() for _ in range(samples)]
+
+    def generate_time(self, time):
+        return self.generate_samples(round(time * self.sample_rate))
+
+
+def remap(number, from_min, from_max, to_min, to_max):
+    number_s = number - from_min
+    from_max_s = from_max - from_min
+    to_max_s = to_max - to_min
+    return ((number_s / from_max_s) * to_max_s) + to_min
+
+
+g = SignalGenerator(0, 1, 48000, (0, 255), True)
+
+with open("input.raw", "rb") as f:
+    data = list(f.read())
+
+with open("output.raw", "wb+") as f:
+    for d in data:
+        g.frequency = ((d / 255) * 12500) + 4000
+        f.write(bytes(g.generate_samples(6)))