|Parameter||Amplitude Modulation||Frequency Modulation|
|(i) Bandwidth||Twice the sum of modulating signal frequency (2fm)||Twice the sum of modulating signal frequency and the frequency deviation.|
|(ii) Signal Quality||AM has poorer sound quality compared to FM, but is cheaper and can be transmitted over long distances.||FM has better sound quality due to higher bandwidth.|
|(iii) Effect of noise on signal||AM is more susceptible to noise because noise affects amplitude, which is where information is “stored” in an AM signal.||FM is less susceptible to noise because information in an FM signal is transmitted through varying the frequency, and not the amplitude.|
|(iv) Range||AM audio ranges from 535 to 1705 KHz||FM audio ranges in a higher spectrum from 88 to 108 MHz|
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