Question

In an amplitude modulated wave for an audio frequency of 500 cycles/second, the appropriate carrier frequency will be

Answer 1

Modulation

1. Modulation is the process of changing the properties of a wave by employing a carrier wave, which may carry the message/data/information signal that needs to be conveyed across a channel without loss.
2. In the real world, a device called a modulator is used to modulate waves, and a device called a demodulator is used to demodulate waves.

Amplitude modulation

1. Amplitude modulation, as we all know, is a modulation technique in which the amplitude of the carrier wave is varied in proportion to the message signal to modulate the wave.
2. In amplitude modulation, the carrier wave's frequency is always higher than the modulated wave's.

Analyzing the data

1. The carrier waves in an amplitude modulated wave will have a higher frequency than the audio stream.
2. If the audio wave frequency is 500 cycles per second, the carrier wave frequency that is greater than the audio wave frequency will be 50,000 cycles per second.

Hence, carrier frequency > audio frequency.