So the bandwidth of FM radio is around 200 KHz.
This implies that FM is able to broadcast a carrie signal of maximum frequency = 100KHz.
However, I am aware they dont broadcast at such a high frequency. Instead they usually broadcast a carrier signal of maximum frequency = 15KHz.
Is this because the hearing range of humans is 20Hz-20KHz ? Hence, a higher frequency would not be heard so it makes no sense in broadcasting and cluttering up the spectrum ?