Lexicon MPX 1 - Manual (Page 105)

8-3
MPX 1 Internal Controllers
These ADSR-type envelope generators can be gated on and off via any MPX 1
patch source. Aside from the usual attack, decay, sustain and release param-
eters. The MPX 1 ADRs include additional controls that allow you to further
customize their behavior.
Note that the rate parameters (attack, decay and release) are logarithmic. The
highest value, 100, is very fast (less than a millisecond). The lowest value, 0,
is very slow (more than two minutes). Values above 50 are generally the most
useful unless you are creating effects with control changes that take place over
several tens of seconds.
ADR1 and ADR2
ADR (1 or 2)
Parameter Range Description
Mode Off, Once, RTrig, Loop Cycle repetition behavior (See notes.)
OnDly 0-100 ADR output delay for multiple ADSR offset
ARate 0-100 Attack rate
DRate 0-100 Decay rate from 127 to S Lvl
S Lvl 0-127 Sustain level
STime 0-100 Length of time cycle is maintained at S Lvl
while OnSrc is at or above OnLvl
RRate 0-100 Rate of change from S Lvl to 0
OnLvl 0-127 Threshold
OnSrc Off, On, any internal Selected trigger
or MIDI controller
50's Sci Fi EkoSweepFilter
ADR Modes
Off: ADR is disabled (OnSrc and
OnLvl are ignored)
Once: ADR completes a full attack,
decay, sustain, release cycle
when OnSrc value rises
above OnLvl. (During the
cycle, further changes of
OnSrc value are ignored.)
RTrig: ADR restarts its attack, de-
cay, sustain, release cycle
whenever OnSrc value rises
above OnLvl.
Loop: ADR repeats its attack, de-
cay, sustain, release cycle
endlessly
Random (Random Number Generator)
Parameter Range Description
RndLo 0-127 Low limit
RndHi 0-127 High Limit
Rate 0-50.00 Speed
(Rate Units) Option of Rate: Hz or Cycles per Beat
This controller produces a random stream of numbers whose maximum range
is 0-127. You can limit both the lowest and highest values and control the rate
at which the numbers are generated. Random Generator
RandomChorus S/H Improv