Implementation of time delayed features in LabVIEW2014

[theres]

Can someone help me out with the implementation of time delayed features in labview? I am attaching a word file with the formulae

[GerdW]

Hi theres,

implementation of time delayed features in labview?

I don't see any "time delays" in those formulas.

They are just simple sums with array elements…

[theres]

Can you suggest a possible way in which these features maybe implemented in labview. Thank you for the information.

[GerdW · Accepted solution]

Hi theres,

this should resemble the first formula:

Edit: you should wire "N" directly to the length input of ArraySubset…

[theres]

Thank you so much GerdW KNIGHT OF NI for that demonstration. It is surely of great help to me

[theres]

I am working on the extraction of time domain features from EMG signals. I have attempted the program with the understanding of the existing formula but am not getting the desired result. Also I have n idea as to how to set the threshold for the same. I am hereby attaching the program along with the formula

[GerdW]

Hi theres,

why do you start a new thread for the very same problem?

You really should do the LabVIEW basics and learn to handle arrays within LabVIEW!

This is the equivalent to your Word formula:

Subtract X[i] from X[i+1], take the absolute value, sum all differences…

Why do you think you need to AND some float values, compare the result to a threshold  and sum up boolean values?

(There still is no "time domain" in your formulas. Nothing related to something like "t", "dt" or similar!)

[theres]

I need to extract clean signal from a given EMG signal but have no idea as to how to do it in labview. I need to extract signal for a period of 200ms from a signal having sampling rate of 1000 samples/sec. Any suggestion or help in this regard is welcome I am attaching one of the signals in .txt format.

[altenbach]

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wrote:

I need to extract clean signal from a given EMG signal but have no idea as to how to do it in labview.

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Please define the words "clean signal". (filtering? noise removal? averaging?)

Do you really know how to do it outside LabVIEW? If you can tell us how you would do it in any other programming language (or even paper&pencil) we will be happy to help you implement it in LabVIEW. 😄

[theres]

I mean I need to get a sliding window of 200 samples over a signal of 10000 samples but have no idea on how to do it.