What is the Matlab code to generate a square wave?

Answer 1

The below code in Matlab can generate a square wave.

fs = 1000;

t = 0:1/fs:1.5;

x1 = sawtooth(2*pi*50*t);

x2 = square(2*pi*50*t);

subplot(2,2,1),plot(t,x1), axis([0 0.2 -1.2 1.2])

xlabel('Time (sec)');ylabel('Amplitude'); title('Sawtooth Periodic Wave')

subplot(2,2,2),plot(t,x2), axis([0 0.2 -1.2 1.2])

xlabel('Time (sec)');ylabel('Amplitude'); title('Square Periodic Wave');

subplot(2,2,3),stem(t,x2), axis([0 0.1 -1.2 1.2])

xlabel('Time (sec)');ylabel('Amplitude');

The resultant wave has an amplitude of +1 to -1.

Answer 2

Here is an example Matlab code to generate a square wave with a frequency of 1 Hz, a duration of 1 second, and an amplitude of 1:

t = 0:0.001:1; % time vector from 0 to 1 second with a step of 0.001
f = 1; % frequency of the square wave (1 Hz)
x = square(2*pi*f*t); % generate the square wave
plot(t, x); % plot the square wave

This code uses the square function in Matlab to generate the square wave and the plot function to visualize it.