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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.
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.
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The code below can generate triangular wave in Matlab. A=2; t = 0:0.0005:1; x=A*sawtooth(2*pi*5*t,0.25); %5 Hertz wave with duty cycle 25% plot(t,x); grid axis([0 1 -3 3]);
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The code below generates a saw tooth wave in Matlab fs = 10000; t = 0:1/fs:1.5; x = sawtooth(2*pi*50*t); subplot(1,2,1); plot(t,x), axis([0 0.2 -1 1]); xlabel('t'),ylabel('x(t)') title('sawtooth signal'); N=2; fs = 500;n = 0:1/fs:2; x = sawtooth(2*pi*50*n); subplot(1,2,2); stem(n,x), axis([0 0.2 -1 1]); xlabel('n'),ylabel('x(n)') title('sawtooth sequence');
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