How to set sample values to zero

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Amber Binney
Amber Binney el 19 de Mayo de 2022
Respondida: Voss el 19 de Mayo de 2022
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

Respuestas (1)

Voss
Voss el 19 de Mayo de 2022
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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