Hi everybody,
I have question: Why can you do Convolution filter in the frequency Domain ?
I mean, when you apply a filter to an image in the spatial domain, it 's easy. You've got for example your sobel 3x3 kernel that you apply on every pixel of your image. Easy.
But when you convert...
How do you convert functions from the time domain, to the frequency domain
For example: cos(250t + 30degrees) is what in the frequency domain?
Are there some general steps I can follow to do this?
So...a cosine wave when shown in the frequency domain is represented by a 1/2 magnitude vector at the positive frequency and a 1/2 magnitude vector at the negative frequency. I am surprised by this because I cannot understand why a vector of magnitude 1 at the positive frequency of the cosine...
Aaah! - sin(wt) - time or frequency domain?!
hi guys
going a bit blank now...
been thinking a bit too much about time and frequency domain to a point where I've confused myself a bit...
The well known function: f(t) = sin(wt)
It is evident that this expression is in the time...
I have a couple of questions regarding the representation of a signal in the frequency domain I wish someone could help me with..
1-why is it when we represent a non-periodic signal in the frequency domain it is continuous while the frequency domain of a periodic signal is discrete ...