A voice signal occupying the frequency band of 0.4 to 3.5 kHz is used to amplitude-modulate a 10

step 1 A voice signal occupying the frequency band of 0 .4 to 3 .5 kilohertz, then determine the range

A voice signal occupying the frequency band of 0.4 to 3.5...

A voice signal occupying the frequency band of 0.4 to $3.5 \mathrm{kHz}$ is used to amplitude-modulate a $10-\mathrm{MHz}$ carrier. Determine the range of frequencies for the lower and upper sidebands.

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Key Concepts

Sidebands

Frequency components that appear on either side of the carrier frequency as a result of modulation. The upper sideband is the sum of the carrier frequency and the modulating frequencies, while the lower sideband is the difference between the carrier frequency and the modulating frequencies.

Modulating Signal Frequency Range

The frequency span of the input or message signal used to modulate the carrier. This range directly influences the bandwidth of the modulated output, as it determines the spread of frequencies in both the upper and lower sidebands.

Amplitude Modulation (AM)

A modulation method where the amplitude of a high-frequency carrier wave is varied in proportion to the instantaneous amplitude of a lower-frequency message signal. This technique results in the generation of sidebands, which contain the information of the original signal.

Carrier Frequency

The central frequency of a modulated signal in AM systems. It acts as the reference frequency that is shifted by the modulating signal, resulting in the creation of sidebands at frequencies above and below it.

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