How to filter high amplitude signals ?

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Jingqi Sun 2022-12-2

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评论： Jingqi Sun 2022-12-3

Hello, I have some signals and I want to only keep high amplitude signals. All of my signals have a sine wave shape, some might have glitches. This is what I want to achieve:

!I have 39 signals

c=[]

for i = 1:39

if max(signal(i))> Amplitudelimit

c(1,end+1)=i

end

Does matlab have built in function for this operation?

Thank you.

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采纳的回答

Askic V 2022-12-2

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编辑：Askic V 2022-12-2

在 MATLAB Online 中打开

I think this can do just fine:

rand_arr = 1+2*randn(100,1);

plot(rand_arr, 'o');

hold on

amp_level = 2; % treshold

filt_arr = rand_arr;

filt_arr(filt_arr < amp_level) = 0;

plot(filt_arr, 'r*');

ylim([-10 10]);

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Jingqi Sun 2022-12-3

Thank you so much!

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