Smooth--
The 'Smooth' modifier takes an input value and smooths it. This is done by reading the value of the surrounding frames and averaging them.
Steps: The 'Steps' option determines how many frames surrounding the current frame will be read to evaluate the smoothness. A value of 1 means that 1 frame either side of the current frame will be used. The three frame values will be added together and divided by 3 to result in the smoothed value for the current frame. A value of 10 means that 10 frames either side of the current frame will be read.
Iterations: The 'Iterations' option defines how many passes are made at the smoothing function. If the Steps channel is set to 1 and the Iterations channel is set to 2, then the surrounding frames of the current frame will be evaluated and smoothed and the resulting smoothed value will be used to calculate the smoothing for the current frame. Increasing the iterations count, whilst keeping the steps quite low results in a smooth curve with minimal loss of data.
Strength: The Strength channel allows the smoothing function to be blended on and off. This is mainly for animating purposes, as animating the integer Step and Iteration channels will result in stepped animation.
Scale: The Scale channel simply multiples the smoothed value. This can be useful for maintaining the high-peaks when the input channel has been overly smoothed.
Output: The resulting values from the smooth operation.
Smooth Channel Modifier Examples--
The original unsmoothed
animation curve.
The sample curve with the Smooth operator- Steps 1, Iterations 1
The sample curve with the Smooth operator- Steps 1, Iterations 3
The sample curve with the Smooth operator- Steps 10, Iterations 3
