Cleaning up a dirty voltage signal.

[flycast]

NXG.

I have a dirty voltage signal coming into my NI-9205. It is Referenced single ended and we are working on getting it cleaner. Having said that I also know that this is a situation I will be dealing with to one degree or another.

I am wanting to do some math to get a moving average or something to "clean up" this voltage signal. My actual signal is yellow below. What I want is something more like the red.

I know that there are a lot of prewritten filters (not sure if this is the right term) that will do this for me. I read the docs on and off all weekend and at this point I am pretty confused regarding what is what in regard to cleaning this signal up.

I am hoping that I can get some pointers on how people typically clean something like this up.

[GerdW]

HI flycast,

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@flycast wrote:

I am wanting to do some math to get a moving average or something to "clean up" this voltage signal. My actual signal is yellow below. What I want is something more like the red.

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The red line looks like being the average of all yellow "points" (aka samples)…

[Yamaeda · Accepted solution]

Averaging or Low pass filter is probably what you're looking for.

[flycast]

Ah!

Maybe this one?

[GerdW]

Hi flycast,

this only designs a filter - it isn't a filter…