Averaging is a signal processing technique applied in the time domain, intended to increase the strength of a signal relative to noise that is obscuring it.
1
vote
0answers
46 views
Slow sampling of signal and averaging over n periods
Can one in theory achieve as high accuracy as needed by sampling a sinusoidal signal over n Periods? Is there a formula that connects the signal frequency (f), sampling frequency (fs), periods (P) and ...
1
vote
1answer
42 views
How do I average frequency spectra?
How did letter d.) become letter e.)? How do we perform this averaging process? Its clear the averaging the signal causes some noise to be reduced.
1
vote
1answer
169 views
Weight vector of an exponential moving average?
With weight vector I mean the vector with weights that you have to multiply the observations in the window that slides over your data with so if you add those products together it returns the value of ...
6
votes
1answer
106 views
What is averaging and how can it be done?
I'm studying about the analysis of (mainly) fMRI and EEG data. Multiple times it's mentioned that to reduce noise, you can use averaging, but nothing more detailed than that.
There never is literally ...
6
votes
2answers
204 views
Does the determination of the ergodicity of a signal force any changes in methodology?
In mathematics, the term ergodic is used to describe a dynamical system which, broadly speaking, has the same behavior averaged over time as averaged over space. -from wikipedia
From the ...
