Verb for subtracting the mean?

Question

Is there a verb for removing the mean or DC component of a signal? I am trying to name a flag for doing just that.

"Normalize" can mean many things, so I don't think that would be a good choice.

.."DC Blocking" – robert bristow-johnson Jul 20 '18 at 23:15 — robert bristow-johnson, Jul 20 '18 at 23:15

score 8 · Accepted Answer · answered Apr 04 '13 at 13:02

8

I've heard this referred to as demeaning a signal, or applying a DC notch (or, in some more hardware-related domains, a DC block). More generally, it might be called just highpass filtering the signal to remove the DC component.

answered Apr 04 '13 at 13:02

Jason R

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That's a demeaning way to refer to it! ;-) – Peter K. Apr 04 '13 at 13:05

sansuiso · Answer 2 · 2013-04-05T08:08:01.890

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I've heard the word centering for setting the mean of a signal to 0.

edited Apr 05 '13 at 08:08

answered Apr 05 '13 at 06:35

sansuiso

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score 3 · Answer 3 · answered Apr 04 '13 at 13:05

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I've heard this called detrending. Although DC removal is a subset of what this means, the Mathworks refers to it in their detrend function:

The MATLAB® function detrend subtracts the mean or a best-fit line 
(in the least-squares sense) from your data. If your data contains 
several data columns, detrend treats each data column separately.

answered Apr 04 '13 at 13:05

Peter K.

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Peter, I don't believe removal of mean is 'de-trending'. As you of course know the mean simply removes the DC/constant component, however, the de-trending removes the uber low frequency components. (Yes I think MATLAB's usage of the verb is wrong. :-) ) – Spacey Apr 04 '13 at 14:29
@Mohammad: Agreed it's not quite right, but it is the way I've heard it used. – Peter K. Apr 04 '13 at 15:07
Peter, yeah, the terminology can get muddied up sometimes. – Spacey Apr 04 '13 at 16:01

score 0 · Answer 4 · answered Jul 20 '18 at 21:04

0

A seldomly-used term is symmetrization, with accounts for removing a central tendency value (could be the average, the median, the midrange, depending on the loss function to minimize).

References:

Algorithms for data symmetrization

answered Jul 20 '18 at 21:04

Laurent Duval

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score 0 · Answer 5 · answered Apr 05 '13 at 05:53

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Another potential candidate:

"Zero-DC-ing the signal"

answered Apr 05 '13 at 05:53

geometrikal

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Verb for subtracting the mean?

5 Answers5

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