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How phase shift affects color mixing
So far we have considered only the cases of static pulse width
and phase shift. However, you can also choose to vary either or
both across a segment. When the phase of one color is changing
at a different rate than another, the resulting colors are con-
stantly changing. We call this dynamic phase shift, illustrated in
the example shown below.
For simplicity, only the first and last pulses from a segment are
shown. The phase shift is programmed as follows:
Color
Start
phase shift
Finish
phase shift
Red
0° (degrees)
90°
Green
90°
0°
In other words, the phase of the
red
sine wave is moving slowly
forward, while the phase of the
green
sine wave is slowly moving
backwards. This causes the amount of each color to mix slightly
differently in each cycle, producing a range of yellow/gold colors
as well as green and red. Using this effect with low frequencies
can produce some especially interesting effects.
Figure 6
Содержание Procyon AVS
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