The analog tag has no wiki summary.
5
votes
5answers
177 views
Why do we use window in time domain rather than do FFT modify the spectrum and than inverse FFT
I thought that DSP would be done by using FFT of portions of a signal, modify the samples that result from FFT (since they represent the spectrum of our signal + noise) and remove any unwanted signals ...
4
votes
1answer
32 views
Is gamma correction applied in my setup
I am working on a scientific application where I would like to evaluate luminance in an image, however I am unsure if what I receive from my setup is luminance (Y) or luma (Y'). I use a camera with a ...
3
votes
1answer
80 views
Are there characteristics of photographic film that would make it an analog medium?
There was an article a few years ago entitled "Analog is Not the Opposite of Digital".
Film is not analog, period. I used to shoot film on a Canon AE-1 from the ’70s. Now I have a digital SLR from ...
2
votes
3answers
1k views
If Digital Signal has frequency components then why we don't use it
As we know there are two kinds of signals: analog signals and digital signals.
And there are two common techniques for multiplexing the signals: Time Division Multiplexing (TDM) and Frequency ...
6
votes
0answers
176 views
How to deal with a negative pole (unstable) in the pre-filter of a control system?
So while answering how to design a PI controller for a first order time delayed system (Question Here )
Here is the closed loop equation to a control system:
$$
G_C(s) = ...
9
votes
2answers
192 views
Understanding a Bainter Circuit (chebychev filter)
As part of a class in Signal Processing, I am building a 3rd order Chebychev band reject filter. We implement this by using three cascading Bainter circuits. Although not part of the class, I have a ...
