Point by point count in a window

I am a user of labview 8.5 working in the field of aerodynamics - namely laminar boundary layer turbulent transition.

I want to take a signal high-pass filtered, rectify, and then place a window around the remaining signal (equivalent to 10% of the average of the signal not filtered) and count the number of points both inside and outside the window.  I can use a histogram for this as in the attached vi, but I need to do an analysis point by point, because the things that pass through the window faster than a length of residence requirement should be considered as turbulent instead of laminar.

To say more explicitly the points above the average of 10% get digitally assigned 1, anything less than 0, but say that part of the signal less than 10 consecutive zero points are sandwiched between two 1 then they need to be addressed as 1 also.  Where 10 points in a row to my frequency equals my critical residence time.

I hope I have given you an adequate description of what I'm trying to achieve, could someone direct me to achieve this please?  I am not too concerned about the filters, frequency etc. are used at the present time.

Thank you.

Solved.  YeeHa!

I want to thank my family, friends (if I have) and sponsors...

Tags: NI Software

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