ECG denoising using fourier transform
显示 更早的评论
Hii
I have to denoise an ECG siganl using fourier transform. I read abt this algorithm somewhere 1)load the signal, 2) perform discrete fourier transform on the signal 3) make all the coefficients below a certain threshold as 0 4)take the inverse fourier transform of the resultant signal *
i was wondering if this is algorithm is correct or not ? ... also how do i do step 3 ?? .. should i pass the signal through a nigh pass filter ?
need help regarding this... thanks
回答（1 个）
Towfeeq Fairooz
2011-4-26
0 个投票
step 3:first get the coefffients in a vector say coeff. Then in your code ...( for i=1:length(coeff),if coeff(i)>= threshold,new_coeff(i)= coeff(i) end)...In this way,the values below threshold will become 0.
类别
在 帮助中心 和 File Exchange 中查找有关 Spectral Measurements 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
