FM stereo

FM stereo transmits two separate audio channels—left and right—simultaneously over a single FM radio signal, creating a richer, more immersive sound experience. It does this by encoding the two channels onto a carrier wave: the mono audio is transmitted as usual, and a separate stereo signal, called the pilot tone, helps your radio decode the two channels. Your receiver then separates these channels, reproducing the stereo sound. This method allows for high-quality, noise-resistant stereo broadcasts, enhancing music and sound clarity without significantly increasing bandwidth or complexity.