High Speed Encoder Problem

[mikets]

We have a similar filter in our library but we called it MovingAverage filter. In a sense, it is averaging the last N points.

/*
 * MovingAverage of N points:
 *      MovingAverage = (MovingAverage*(N - 1) + CurrData)/N
 *                    = MovingAverage*(N - 1)/N + CurrData/N
 *                    = MovingAverage*(1 - Kf) + CurrData*Kf
 * where 1/N = Kf
 *        (N - 1)/N = 1 - 1/N = 1 - Kf
 */