Cumulative Moving Average?

Question

Hi,
I would like to use Signal Express to create a cumulative moving average, running "every 100 data" points, from data point to data point until the end of my recorded signal.
So, for example, I would be producing a new signal from my initial signal; creating an average from data point 1 to 100, then an avearage of data point 2 to 101, 3 to 102, and so forth until the end of my recording. Is there a step in signal express that can accomplish such a task?
My hope is in the end to create a sort of running average of  the sums of squares, every 100 data points, from my initial recording.
I have first recorded a voltage signal, and then by using the Formula step I have squared each value of my recorded sample. Now all I seek to accomplish is the "running average" of this newly squared signal.
Seeking any and all advise. Many thanks.
GYepes

Answer 1

I find the description of the task a little confusing.  The title is "cumulative moving average" which seems contradictory to me.  A moving average analysis is a statistical time-series method of smoothing a signal's frequencies with a wavelength equal to the time span of the average.  Frequencies greater or lesser are not smoothed.  The method does not accumulate anything, thus the contradiction.  If the task is to recalculate the average for all samples recorded for every project iteration, then that is more like a cumulative average?  From the more detailed description it seems the former is more likely the task.  Additionally I am unsure if the task is to "process" a signal in real time or to "analyze" a pre-recorded signal?
Let me encourage the exploration of the Process steps for real time signals, and Analysis steps for pre-recorded signals.  Signal Express has sophisticated numerical methods to meet most needs.  Take a look at "Processing - Analog Signals - Time Averaging" as a first guess to satisfy your needs.  I sincerely hope this helps to clarify the task - a problem well defined is half solved (anon.).