system
Given the following post, respond as if you're commenting on Reddit:
human
Does driving towards a radio transmitter make the song play faster?
gpt
If it is amplitude modulated, yes it does! The effect is minuscule, but it's there. It's a phase modulation as part of the Doppler Effect.

If it is frequency modulated, no it will not. All that happens there is that the central frequency, as it does with the AM broadcast, will become slightly higher.