Tagged Questions
0
votes
0answers
32 views
On using fourier transforms to solve the root of a convolution
In continuation of Lower bounds of laplace transform of characteristic functions.
My question is:
Can anyone point out where i'm going wrong in the derivation below.
It's been a while ...
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1answer
191 views
Deriving complex form of Fourier series
I have encountered a problem where I get the correct outcome, but I am uncertain as to whether or not my steps are logically justified. I would really appreciate some input regarding this! The ...
1
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1answer
241 views
FFT with a real matrix - why storing just half the coefficients?
I know that when I perform a real to complex FFT half the frequency domain data is redundant due to symmetry. This is only the case in one axis of a 2D FFT though. I can think of a 2D FFT as two 1D ...
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0answers
187 views
Convolution between a kernel and an image with FFT
In the FFT2D paper (Fast Fourier transform used for a convolution with a kernel in the frequency domain), I'm lost at the second page first picture:
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1
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0answers
68 views
Solution for this Convolution
We have $f(z)=z+ \sum_{n=2}^{\infty} a_{n}z^{n}$ where $a_{n}$ is a constant and $g(z)=z$, $(f*g)(z)$ is equal to what? i still wondering to confirm that $(f*g)(z)=z$.
2
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2answers
242 views
Example of Convex Function
Knowning that $f(z)=z+a_2z^2+a_3z^3+...$ is a convex function, is it the derivative of f(z) is also a convex function?
1
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2answers
110 views
Z transform of a complex convolution
I found this paper on Hilbert Transform, which is a very nice read. I've studied signal processing, but from a more practical than mathematical perspective. Can someone explain to me how we arrive at ...
1
vote
0answers
190 views
FFT signal post processing
This is more a "post a suggestion" topic rather than a question. And thank you if you are willing to read this whole.
I've been studing the code in the Nvidia Cuda SDK regarding how to operate a ...
