Problem 125. Remove DC
Input x is the sampled signal vector, may have both AC and DC components. Output y should not contain any DC component.
Example:
Input x = [ 1 2 3 2 1 2 3] Output y = [ -1 0 1 0 -1 0 1]
Solution Stats
Problem Comments
-
2 Comments
The Test Suite is not demonstrating removal of a DC component, as there is no way to identify the AC component in any of the tests! For example, Test 3 has x = 0:100, and from this we are supposed to obtain signalMean = 50. But without any observations to show that at earlier & later times the signal is decreasing with time, like x = [2 1 0:100 99 98], we have no way to know that more observations wouldn't have revealed, say, x = [2 1 0:100 101 102], for which signalMean = 51. And indeed we could get any arbitrary signalMean based on the limited observations in this Test Suite.
The DC component of a signal is usually its mean.
Solution Comments
Show commentsProblem Recent Solvers433
Suggested Problems
-
2463 Solvers
-
9122 Solvers
-
479 Solvers
-
437 Solvers
-
Check that number is whole number
4424 Solvers
More from this Author100
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!