Smoothing of the Alpha Waveform

Ramp duration for the increasing alpha and decreasing alpha phases

During the ramp duration, the alpha value changes gradually

In addition to the duration of the four phases, the programmer can specify a ramp duration for the increasing alpha and decreasing alpha phases. During the ramp duration, the alpha value changes gradually. In the case of motion interpolators, it will appear as though the visual object is accelerating and decelerating in a more natural, real world, manner. The ramp duration value is used for both the beginning and ending portions of the phase and therefore the ramp duration is limited to half of the duration of the phase. Note that the alpha value changes linearly between the two ramp periods.