How to find onset of a signal?

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Prajkta Kallurkar
Prajkta Kallurkar 2020-2-27
评论： Arlinda Gashi 2021-5-14
I need to find onset of the signal in the attached figure. The onset locations are marked by red circles.
Thanks.

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回答（1 个）

Prabhan Purwar
Prabhan Purwar 2020-3-4
Hi,
Try making use of findchangepts() function https://in.mathworks.com/help/signal/ref/findchangepts.html
Hope it helps!!
  2 个评论
Prajkta Kallurkar
Prajkta Kallurkar 2020-3-4
Thanks. I used the gradient function and it worked.
Arlinda Gashi
Arlinda Gashi 2021-5-14
@Prajkta Kallurkar, I am also trying to use gradient function to find onsets in a signal, but I do not see much of a change in the signal. Could you please give me more information how you did it?
Thanks!

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