How to plot common zero crossings of 3 different signals (3 sinusoidal signals)?
显示 更早的评论
Hi, I am new to Matlab.
I am looking to plot the common zero crossings of three signals
Ex: I have 3 sine waves:
x = sin(2*pi*fo*t);
x1 = sin(t+sin(t.^2));
x2 = x+x1;
I need to find and plot the common zero crossing points in all the three signals.
Can anyone please help me out with this?
采纳的回答
Gurudatha Pai
2013-5-1
This may sub-optimal but definitely a start. I would find the zero crossings of each as a vector of 1's and 0's and add them. Then find the sum of them.
x_index = ZeroCrossing(x);
x1_index = ZeroCrossing(x1);
x2_index = ZeroCrossing(x2);
sum_index = x_index+x1_index+ x2_index ;
ZC_index = (sum_index == 3);
function x = ZeroCrossings(x)
x(x>0) = 1;
x(x<0) = 0;
x = abs(diff(x));
end
Hope that gives you some idea! I am certain others will have better way of doing it!
I think the above code should work, but I haven't tested it!! So, please be advised!
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Simulink 的更多信息
2013-5-1
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
