If I understand you correctly, you want to know where you can find the new filtered signal.
In the example you used, there are two signals plotted on the scope. The noisySignal and the filteredSignal.
These two represent the before and after filtering values of the signal. If you are interested in the filtered values, you can find them in the filteredSignal variable.
filteredSignal is a 500x1 vector, which means that the signal has 500 points. You can access each point by typing
filteredSignal(index)
where index can be any value between 1 and 500.
