I have an upconverted signal that is around the carrier frequency fc. I'm trying to plot this signal's FFT but failed to scale the frequency axis corr ...
I have an upconverted signal that is around the carrier frequency fc. I'm trying to plot this signal's FFT but failed to scale the frequency axis corr ...
can you guys help me about this code, i found this code in internet, i do not understand what is the pupose of 'num_fft' in that code? and how to g ...
The description of frequency on Wikipedia is: Frequency is the number of occurrences of a repeating event per unit of time Now, when ...
I have an image where I add a Gaussian noise. I need to use the ideal low pass filter to remove the noise but I cannot really see any examples on the ...
When we want to encrypt an audio file (wav/mp3), why is the encryption done in the frequency domain? I looked at some audio encryption methods and the ...
Please feel free to point out any errors/improvements in the existing code So this is a very basic question and I only have a beginner level understa ...
If I have two audio signals Y1 and Y2 in Fourier domain that are the results of multiplication of S with H1 and H2 respectively (convolution in time d ...
Why it is said that "convolution of an image in spatial domain is equal to multiplication in frequency domain" ? Could anyone please explain it briefl ...
What would be the effect on initial image of applying this filter: in the frequency domain? How can I determine the effect without using computer ( ...
I have an output from a noisy signal, saved as a set of cosines. I have a set of frequencies from 0 to x Hz (x is a large number), and a set, of the ...
I was reading Practical Introduction to Frequency Domain Analysis. It shows how to observe the frequency content of a signal using this code: Fs = 44 ...
Let's say I have some data that corresponds to the average temperature in a city measured every minute for around 1 year. How can I determine if there ...
I have this simple line of code that reads an image and takes a fourier transform of the image using fft2 function of matlab and then bringing the low ...
I've got torubles with appling gaussian blur to image in frequency domain. For unknown reasons (probably I've dont something wrong) I recieve wired im ...
One thing i am taking fourier() as 2 channels instead of only taking real channel. i am not sure if i am wrong in this regard. Also thats why i had ...
I'm trying to convolve a rectangular pulse with itself by taking the Fourier transform, squaring it, and then taking the inverse Fourier transform. I ...
So when I try to find a template B in a big image A, I can do it by finding the maximum of cross-correlation, like this in spatial domain: But when ...
I know that we can get the phasor representation(frequency domain) of a signal through Fourier transform, but the picture above gives a method that ...
I have built a little program that encodes binary data into a sound. For example the following binary input: will produce a 'sound' like this: w ...