How to set sample values to zero

2022 5 19
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更新时间：2022 5 19
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I need to find samples of my noisy signal that are below the noise amplitude and set those to zero. Thank you for any help

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Voss
Voss 2022-5-19
Ran in:

0 个投票

Ran in:
Use x(x < threshold) = 0, where x is your signal and threshold is your noise amplitude. Or x(abs(x) < threshold) = 0, if you meant the amplitude of the signal is below the noise amplitude.
Here's a concrete example:
% random signal
x = 0.25*rand(1,20);
plot(x,'-o');
hold on
% set values below 0.1 to 0:
x(x < 0.1) = 0;
plot(x,'.-');
legend({'original' 'new'})

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Voss
Voss
2022-5-19

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