Lexicon PCM 80 - Manual (Page 95)

3-37
The Algorithms and Their Parameters
You can set and display delay val-
ues in units of time, or with tempo
values. Press Up and Tempo simul-
taneously to toggle between these
two options. When time units are
selected, delay times are set and
displayed in milliseconds (From 0ms
to the maximum available delay for
that parameter). When tempo val-
ues are selected, delay values are
set and displayed as a ratio of ech-
oes to beats (from 24:1 to 1:24). This
will automatically synchronize the
delay to the current tempo (MIDI,
Internal, or TAP — see Tempo Mode
in Chapter 2.) For example, a delay
setting of 1:2 (1 echo for every 2
beats) will produce half-note delay
rhythms synchronized to the current
tempo.
RefLvl L&R, RefDly L&R
These controls provide pre-echoes to the left and right channels. The maximum
range for Inverse effects is 800ms. In all other effects it is 1.2 seconds. Press
Load/
✱ to cycle through the selections.
EkoFbk L&R,EkoDly L&R
Available in the Plate, Chamber and Infinite algorithms, these controls provide
a pre-echo of 1.2 seconds maximum to the left and right channels, with
feedback. Press Load/
✱ to cycle through the selections.
PstMix, PstGld
In the 4-Voice Algorithms, these controls adjust a pair of delays after the reverb.
Press Load/
✱ to cycle through the selections: PstMix, Pst Dly L&R, GldResp
and GldRange.
Pst Mix
In the 4-Voice Algorithms, this parameter controls the mix of the reverb audio
with the post delayed reverb audio (0-100%).
Pst Dly L&R
In the 4-Voice Algorithms, these parameters control the time of the post
delay. The available range of 0-682ms can produce a variety of pitch shift,
flange, or stutter effects on the reverb audio. (Expanding PCM 80 memory
will extend this range to 1365ms.)
GldResp
In the 4-Voice Algorithms, this parameter controls the response of the glide of
the post delay. The range is 0-100, with a typical default setting of 50. This setting
provides a good, real-time glide. Changing a delay time from 0 to 100 ms with
a glide response of 0, causes the glide delays to take a minute or more, allowing
subtle changes in delay times and echoes with no noticeable pitch shifting. A
glide response of 100 is ultrafast, causing high speed pitch shift, and even
chirping effects with large delay time changes.
GldRange
In the 4-Voice Algorithms, this parameter controls the range over which changes
to the post delay time will be performed as a glide. For example, if GldRange is
set to 100ms, and the PstDly L and R times are varied over a range of 100ms,
those delays will glide smoothly from one delay time to another. Suddenly
changing the delay time to a greater value, such as 200ms, will cause the audio
delay to change instantly to the new time without gliding. The available range is
0-682ms, with 0 causing all delay time changes to be "instantaneous", and 682
causing all delay time changes to glide. (Expanding PCM 80 memory will extend
this range to 1365ms.)
Rvb Time cont'd.