Is it possible to generate a sine wave like this? I tried combining 50hz, 100hz and 200hz together but I did not get something like this picture that I provided here.

Question

Sabbir Ahmed 2022-8-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1773755-is-it-possible-to-generate-a-sine-wave-like-this-i-tried-combining-50hz-100hz-and-200hz-together-b

评论： Sabbir Ahmed 2022-8-9

采纳的回答： Bjorn Gustavsson

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Bjorn Gustavsson 2022-8-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1773755-is-it-possible-to-generate-a-sine-wave-like-this-i-tried-combining-50hz-100hz-and-200hz-together-b#answer_1021070

Yes it is possible. You will have to make the phase-angle match at the frequency transitions (for simplicity make the time-windows an even number of periods for all three frequencies). And you will have to think about what you get at the transitions.

HTH

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Sabbir Ahmed 2022-8-9

在 MATLAB Online 中打开

Thanks, I was able to write a code for that.

t = -0:0.001:0.25;
x = 384*sin(2*pi*t*20)+384;
y = 384*sin(2*pi*t*100)+384;
z = 384*sin(2*pi*t*200)+384;
z1 = (t>=0 & t<0.15);
z2 = (t>=0.15 & t<0.2);
z3 = (t>=0.2 & t<0.25);
%mixed signal
result = z1.*x + z2.*y + z3.*z;