How to generate a wave form

Question

Peeyush 2011-2-8

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1045-how-to-generate-a-wave-form

I wrote this code for generating a square wave for (t = -5.5 to 4.5) and a triangular wave in the same time domain. The code does produce the desired waveform but I think I am using a very elementary technique. Is there a more efficient way to generate wave forms without using the Wave Generation Toolbox in Signals and Systems. The code is pasted here:

%************************************************************ clear all; close all; % Generating Square Wave [u,t] = gensig('square',2,10,0.01); t = t-5.5; for n = 1:length(t) if or(t(n) < -4, t(n) > 4) u(n) = 0; end end plot(t,u); ylim([-2 2]); grid on;

% Generating triangular wave t = -5.5:0.01:4.5; h(1:length(t)) = 0; for n = 1:length(t) if t(n) == 0 pos1 = n; end end pos2 = pos1 + 1/0.01; i = 1; for n = pos1:pos2 h(n) = 1 - i*0.01; i = i+1; end figure(); plot(t,h); ylim([-2 2]); grid on; %************************************************************ Thanks.