Lexicon PCM 80 User Manual page 89

Res 2>Plate Pitch parameters
The voice resonators take the audio impulse from a delay voice and "resonate"
it at a desired pitch. The Res2 effect is a "interval harmonization" pitch assign in
that pitch changes generate interval pitches to be assigned to the six voice
resonators.
Position 0 contains all of the pitch parameters which affect the voices in the
remaining position in the row. Press Load/ to cycle through the selections at
position 0: Assign, Tuning, Active, Key, Scale, Root and Rule.
Assign This parameter has a range of C0 to G10 (128 pitches to be
convenient for MIDI patching). As the value of this parameter is
changed, each voice resonator is set to a pitch at the defined
voice's interval (described later).
Tuning This parameter allows you to tune the A440 reference of the box
anywhere from 430.0-450.0Hz in 0.1Hz increments.
Active This parameter allows you to define the number of voice
resonators which are active. You can choose from 0 (no
resonators active) to 6. Setting the value to 1 will permit only
Voice 1's resonator to ring out. Setting the value to 2 will permit
Voices 1 and 2 to ring out. A value of 6 uses all the voice
resonators. A handy feature of this parameter is the ability to
mute resonators. For example, you can patch this parameter to
a footswitch or pedal, allowing you to drive the parameter value
down to 0 at any time, causing the resonators to stop playing
their last assigned pitches. You can then immediately drive it
back up to the desired number of active resonators. This
"clears" the note assign for the resonators, so they don't go back
to playing their previous pitches, but rather wait for the next pitch
assign to come along before resonating.
Key This parameter establishes a key signature for the pitch selec-
tion of the voice intervals. The range of this value is the 12 keys
from C, C#, etc., up to B.
Scale This parameter establishes one of two scales of semitones: a
standard Major scale (intervals of 2, 2, 1, 2, 2, 2, 1 half steps for
the scale), or a Harmonic scale (intervals of 2, 1, 2, 2, 1, 3, 1).
Root This parameter (with values of 1-7) establishes the root of the
scale which, when combined with the scale, defines the mode.
For example, with a Major scale selected, roots 1-7 define the
modes — Ionian (Major), Dorian, Phrygian, Lydian, Mixolydian,
Aeolian (minor) and Locrian.
The Algorithms and Their Parameters
Pitch cont'd.
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