create_wav.py

import wave
import struct
import math

sample_rate = 16000
duration = 4.0  
frequency = 440.0 

with wave.open("test.wav", "w") as wav_file:
    wav_file.setnchannels(1) 
    wav_file.setsampwidth(2) 
    wav_file.setframerate(sample_rate)
    
    frames = []
    for i in range(int(sample_rate * duration)):
        t = i / sample_rate
        # Make some silence in the middle to simulating turns maybe?
        if 1.5 < t < 2.5:
            value = 0
        else:
            value = int(32767.0 * 0.5 * math.sin(2.0 * math.pi * frequency * t))
        frames.append(struct.pack('<h', value))
        
    wav_file.writeframes(b''.join(frames))

print("Created test.wav")