count cycles in a signal

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Mohanned Al Gharawi
评论： Star Strider 2019-3-8
Hello everybody;
I would like to count the number of cycles for a specific signal as shown in the below figure.
Thanks in advance.
frequencies.jpg

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Star Strider
Star Strider 2019-3-8
Use the findpeaks (link) function. Since this appears to be a modulated sine carrier, you might also find the envelope (link) function helpful to recover the modulating signal, then use findpeaks on it as well.

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