Plotting the tone frequencies

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Anonym 2020-10-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/604633-plotting-the-tone-frequencies

评论： Star Strider 2020-12-7

I am in the process of creating sound. I've created the tone frequencies, but I'll need to show it on a diagram (ex. plot), but it keep giving me error, when using the:

plot(s1+s2);

What am I doing wrong?

The two first plots doesn't give any results, it's just blue.

   figure
   subplot(3,1,1);
   plot(t, s1);
   xlim([0 1E+3]);
   grid
   subplot(3,1,2);
   plot(t, s2);
   xlim([0 1E+3]);
   grid
   subplot(3,1,3);
   plot(t, s1 + s2);
   xlim([0 1E+3]);
   grid
   

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Cris LaPierre 2020-10-4

It's always helpful to share the full error message as well.

When I run the code you shared with the plot command at the end, it generates a warning, but the plot appears. Is that what you see?

Anonym 2020-10-4

编辑：Anonym 2020-10-4

Updated the thread.

Yes sorry, I meant there wasn't something inside the plot, when the window pop-up. It was only blue inside.

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采纳的回答

Star Strider 2020-10-4

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/604633-plotting-the-tone-frequencies#answer_504940

在 MATLAB Online 中打开

Note that ‘t’ seems to be missing.

Substituting for it and changing the xlim parameters:

   t = values;
   
   figure
   subplot(3,1,1);
   plot(t, s1);
   xlim([0 1E-1]);
   grid
   subplot(3,1,2);
   plot(t, s2);
   xlim([0 1E-1]);
   grid
   subplot(3,1,3);
   plot(t, s1 + s2);
   xlim([0 1E-1]);
   grid

appears to create two separate tones and a modulated summation.

It is necessary to ‘zoom’ the plots this way in order to see the details.

Hello, sorry for always disturbing you. Do not know who else I could ask. There is just one thing I am curious about regarding this; is that how can I analyze a graph a two-tone frequencies that are combined in a graph? By your help and using your assistance, I have created two pairs of two frequencies with a close frequency and one with two frequencies that are far apart from each other. There is a clear difference, but how can we analyze it directly from the graph?

Explanation of two-tone frequencies that is combined into one graph - MATLAB Answers - MATLAB Central (mathworks.com)

Appreciating your help.