convolving 1D filter in 1D signal

조회 수: 9 (최근 30일)
2NOR_Kh
2NOR_Kh 2022년 3월 19일
댓글: 2NOR_Kh 2022년 4월 10일
I have a filter with this eq:
GH2=4*t^2*exp(-t^2) - 2*exp(-t^2);
E2=3*sqrt(pi/2);
GHE2=GH2/sqrt(E2);
the t here is a 1*6787 array of numbers, I should convolve my 1d signal; here e(t) with this filter, each of those ts in the above eq coresponds to the t here in e(t), now for convolution I am using the folowing loop, but those ts that I am choosing for my filter make the whole calculation to be elementwise, so I cant convolve my signal with this filter.
Now my question is what should I do to make this filtering process correctly?
for i=1:m
for j=1:n
e=RF_scan(i,j,:);
t1=t(1,i);
GH2=4*t^2.*exp(-t^2) - 2*exp(-t^2);
E2=3*sqrt(pi/2);
GHE2=GH2./sqrt(E2);
e_low=conv(e,GHE2);%this part has an error that convolution is not for elementwise operations
filteredl(i,j,:)=e_low;
end
end

답변 (1개)

Chandra
Chandra 2022년 4월 6일
Hi,
For 1D convolution the two signals should be vector form while doing convolution.
If e is 1D then use Conv function .
If e is 2D then try using Conv2 function.
>>e_low=conv2(e,GHE2);
  댓글 수: 1
2NOR_Kh
2NOR_Kh 2022년 4월 10일
Tnx Chandra, but this problem itself is 1D and the problem is not convolution itself. I changed the way to program this entirely and fixed it.

댓글을 달려면 로그인하십시오.

카테고리

Help CenterFile Exchange에서 Matched Filter and Ambiguity Function에 대해 자세히 알아보기

제품


릴리스

R2021a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by