The audio titled "Chopper" begins with the distant hum of a helicopter, otherwise known as a chopper or copter, gradually increasing in volume. The rhythmic whirring of the rotor blades slicing through the air is distinct and unmistakable. The sound then moves from left to right, creating a stereo effect that gives the illusion of the helicopter flying overhead. Occasionally, there's a change in pitch, indicating the chopper is changing direction or altitude. This audio delivers an immersive experience of a helicopter's flight, from the initial distant hum to the overwhelming sound as it passes right above, and then fades away into the distance.