Lexicon PCM 80 User Manual page 72

PCM 80 User Guide
Lexicon
The Resonant Chord
The Resonant Chord effects use impulsive energy at the inputs to excite six
Algorithms:
resonant voices (notes). The level, pitch, duration, and high-frequency cutoff of
Res1>Plate and
the overtones for each voice are separately controllable. Each voice can be
Res2>Plate
panned independently. The voices resonate to some degree with any input, but
the most effective excitation contains all frequencies, like percussion. Other
instruments may give a quality of tonal ambience in which certain notes rise
ethereally from the background. The output of the resonator is then fed into a
stereo plate reverb effect.
The two algorithms differ in the way pitches are assigned to the resonators. In
Res1>Plate, pitches are assigned to the six voices chromatically, in a round-
robin. If, for example, MIDI note numbers are used to assign pitch, the
resonators will constantly be re-tuned to the pitches of the last six MIDI notes
received. (This can produce an effect similar to playing a piano with the sustain
pedal depressed.) In Res2>Plate, pitches are assigned to the six resonators
diatonically — harmonized with the key, scale, and root of your choice. If MIDI
note numbers are used to assign pitch, the resonators will constantly be re-tuned
to harmonize with the incoming notes.
These algorithms can address up to 4 Meg of delay memory (with optional
SIMMs added to the PCM 80), providing 38 seconds of stereo delay.
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