Lexicon PCM 91, Руководство пользователя

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3-1
The Algorithms and Their Parameters
3
The Algorithms and
Their Parameters
The PCM 91 uses 15 algorithms to create different types of reverberation
effects. Each of these algorithms and its associated parameters are described
in detail in this section.
When you select any effect, the bank and row label will appear on the upper
display line. The matrix location and the effect name will appear on the lower line.
Press and hold Program Banks or Register Banks to display the algorithm
from which the currently loaded effect is derived. Press Edit to display the last
edited parameter in that algorithm's parameter matrix.
The algorithms also share a common set of controls and parameters built around
one or more of the five stereo reverb effects.
Input levels and hardwired pans determine the signal flow to left and right pairs
of delay voices, and also to the reverb effect. Some delay voices have
individually adjustable level, delay, and feedback controls, as well as master
voice controls. A High Cut parameter provides high end rolloff. InWidth and
OutWidth controls allow the creation of spatial effects.
In this chapter, diagrams and descriptions of each algorithm are presented first,
along with pictures of each edit matrix. The diagrams are followed by a glossary
of parameter descriptions, organized alphabetically by matrix row name. Within
each matrix row, parameters are organized as far as possible in the sequence
in which they appear in the row.
Halls: Orchestral
Press Edit to access the
parameter matrix. P0 0.0 Deep Blue
All of the PCM 91 algorithms share the same general structure, shown below.
The shaded area of the diagram is detailed in the individual effect descriptions
that follow.
About the Algorithms