AM/FM modulation

AM (Amplitude Modulation) and FM (Frequency Modulation) are techniques used to transmit radio signals. In AM, the strength (amplitude) of the carrier wave varies in proportion to the audio signal, while its frequency stays constant. In FM, the frequency of the carrier wave changes according to the audio signal, with the amplitude remaining steady. Both methods encode sound information onto radio waves, allowing radios to demodulate and reproduce the original sound. AM is simpler and older, often suited for talk radio, while FM generally provides better sound quality, making it ideal for music broadcasting.