Kolmogorov–Zurbenko filter

Within statistics, the Kolmogorov–Zurbenko (KZ) filter was first proposed by A. N. Kolmogorov and formally defined by Zurbenko. It is a series of iterations of a moving average filter of length m, where m is a positive, odd integer.

Source: Wikipedia — Kolmogorov–Zurbenko filter (CC BY-SA 4.0)