Issue with demonstrating amplitude modulation of sinusoid using MatLab

1. How to do amplitude modulation in Matlab?
2. How do you create a modulated signal in Matlab?
3. What happens if amplitude of modulating signal is changed?

How to do amplitude modulation in Matlab?

y = ammod( x , Fc , Fs ) returns an amplitude modulated (AM) signal y , given the input message signal x , where the carrier signal has frequency Fc . The carrier signal and x have a sampling frequency Fs .

How do you create a modulated signal in Matlab?

y = modulate( x , fc , fs ) modulates the real message signal x with a carrier frequency fc and sample rate fs . If x is a matrix, the modulated signal is computed independently for each column and stored in the corresponding column of y . [ y , t ] = modulate( x , fc , fs ) also returns the internal time vector t .

What happens if amplitude of modulating signal is changed?

As the audio amplitude increases, the modulation of the carrier increases. If the audio frequency rises, the carrier amplitude varies faster, in step with the audio signal. The carrier frequency does not change.