container : Array, predefined Array for holding results

The MovingAverage( A, n ) command applies a moving average filter of length n to a signal sample A, and returns its result as an Array with datatype float[8] of length numelems(A) - n.

Before the code performing the computation runs, A is converted to datatype float[8] if it does not have that datatype already. For this reason, it is most efficient if A has this datatype beforehand.

If the container=C option is provided, then the results are put into C and C is returned. In that case, the container C must have datatype float[8] and size numelems( A ) - n.

The SignalProcessing[MovingAverage] command is thread-safe as of Maple 18.

For more information on thread safety, see index/threadsafe.

$\mathrm{with}\left(\mathrm{SignalProcessing}\right)\:$

$A≔\mathrm{GenerateTone}\left(100\,1\,\frac{1}{\mathrm{\pi }}\,\mathrm{\pi }\right)\:$

$t≔\mathrm{MovingAverage}\left(A\,20\right)\:$

$\mathrm{sP}≔\mathrm{plots}:-\mathrm{listplot}\left(A\right)\:$

$\mathrm{tP}≔\mathrm{plots}:-\mathrm{listplot}\left(t\right)\:$

$\mathrm{plots}:-\mathrm{display}\left(\mathrm{Array}\left(\left[\mathrm{sP}\,\mathrm{tP}\right]\right)\right)$

The SignalProcessing[MovingAverage] command was introduced in Maple 18.

For more information on Maple 18 changes, see Updates in Maple 18.