two pass split window filter

조회 수: 15(최근 30일)
ihab
ihab 2018년 4월 6일
답변: M. Khishe 2021년 2월 4일
i have spectrogram time X frequency matrix ,with peaks that i want, and noise that i dont want, so, how to use two pass split window filter on the signal to make it more clean.

답변(1개)

M. Khishe
M. Khishe 2021년 2월 4일
you can use following commands:
%# some random data resembling yours
x = randn(100,1);
x(75) = -14; x(25) = 20;
subplot(211), plot(x)
%# zero out everything but the high peaks
mu = mean(x); sd = std(x); Z = 3;
x( abs(x-mu) < Z*sd ) = 0;
subplot(212), plot(x)

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