Lexicon PCM 80 - Manual (Page 81)

3-23
The Algorithms and Their Parameters
X-Fbk L/R
These parameters control the corresponding cross feedback levels of the left
and right channel glide delays. Specifically, X-Fbk L controls the feedback from
the left channel A+B glide delay output to the right channel glide delay feedback
input. X-Fbk R controls the feedback from the right channel A+B glide delay
output to the left channel glide delay feedback input. The range of these
parameters is from +100% down to 1% (Phase Normal feedback), 0% (off), -1%
up to –100% (Phase Inverted feedback).
In each algorithm, the Levels row contains parameters for the phase and level
of each voice, as well as a master level parameter for all voices.
Master
The Master Level controls the overall level in effects which have more than one
voice. This permits simultaneous changes in all voice levels without altering the
balance between individual voices.
In the Res1>Plate and Res2>Plate algorithms, the Master parameter contains
two master parameters for the six resonator voices: Mstr Lvl and Mstr Fbk.
(Load/
✱ will toggle between them.) Mstr Lvl is a master level control for all of the
resonator voices, as described above. Use care when adjusting this value. The
resonators will put out high levels if the input source has any components that
are close in pitch to the resonator tunings. In general, this control should be set
to 0dB or less.
The Mstr Fbk control allows the feedback levels for all voices to be scaled over
a range of 0-100%.
Voices
Individual controls are provided for each Voice Level. Voices can be turned
completely off, full on, or set to any point between, in 1dB increments. There are
as many voice level controls as there are voices in an effect.
In the Res1>Plate and Res2>Plate algorithms, positions 1-6 contain both level
and feedback parameters for each of the six resonator voices. (Load/
✱ will
toggle between them.) Lvl controls the individual level and polarity for each
voice. Voices can be turned completely off, full on, or set to any point in between
in 1dB increments. Use care when adjusting this value. The resonators will put
out high levels if the input source has any components that are close in pitch to
the resonator tunings. In general, this control should be set to a value less than
Full.
The Fbk controls set the feedback level and polarity of each voice. Voices 1-3
Fbk control the feedback levels from the left channel delay voice outputs to the
left channel delay voice inputs. Voices 4-6 Fbk control the feedback levels from
the right channel delay voice outputs to the right channel delay voice inputs. The
sum of the values for either side should be less than 100%. (Disregard the
negative sign when adding values.)
Glide FX cont'd.
Levels