23
Glossary
Some of the words defined below are used to describe as-
pects of the programming of Procyon sessions in the follow-
ing Appendix.
BioConnect
2
– A serial data protocol for controlling various parame-
ters of the Artvision with biofeedback equipment, allowing for real-
time control of the system. We intend to publish this specification and
to support its use under the GNU Public License.
Clipped Waveform
– A waveform which is attempting to exceed its
maximum allowed amplitude and in consequence is
clipped
, or set
equal to the maximum possible amplitude.
Color Channel
– A single color from the three available (red, green
and blue), and all of its associated parameters. Each channel is com-
pletely independent of the others and can be set to its own frequency,
brightness, phase, etc.
DC offset
– This controls the amount of steady (ganzfeld) light is
mixed with the flicker component. A setting of 127 allows each pulse
of light to vary between completely off and completely on, while a set-
ting of 255 completely eliminates flicker. Intermediate settings gener-
ate gently pulsing or flickering output, which is generally quite pleas-
ant. Settings in the range 140 to 230 or so produce a nicely balanced
mixture of flicker and steady light.
Flash memory
– Nonvolatile memory, which may be reprogrammed.
Both the Procyon operating system and data storage utilize this type of
memory, which may be programmed and erased up to 100,000 times.
Frequency
– The number of waveform cycles per second. Also re-
ferred to in this document as
Hertz
(Hz for short). The frequency range
for the Procyon is 0.1 Hz to 75.0 Hz.
Ganzfeld
— a field of light which glows steadily, without flickering.
We’ve extended this definition to include fields of light which can
change from one hue to another.
Summary of Contents for Procyon AVS
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