MODIFIERS & CONTROLLERS
142
Doc Q7.0
DEPTH
– Sets the amplitude or “intensity” of the LFO from 0-100%.
DUTY
– Varies the duty cycle, or “symmetry,” of the Triangle, Square, and Trapezoid waveforms.
OUTB PHASE
– Adjusts the phase angle of the LFO’s output B with respect to A. At 180°, the outputs are
phase-opposite, so while A swings from 0–100%, B swings from 100–0%. At 0°, A and B are in phase.
TEMPO
– Sets the LFO rate in rhythmic relation to the global tempo. For example, if the tempo is set to
“1/8,” the LFO will cycle twice per tempo beat (8x/measure). Tempo changes are reflected in real-time. To
ignore the global tempo, set the tempo control to NONE.
LFO1 and LFO2 are also subject to interesting interactive variations made possible by the modifier slots available
on their own parameters. See p.
of the Appendix for a guide to LFO Waveforms, Duty, and Phase.
QUANTIZE
– Divides continuous LFO waveforms into “sample and hold” segments.
In the diagram at right, a “SIN” wav is quantized as “3” values. (Use the “TRI” wav for
rhythmically equal segments.)
ADSR 1 & 2
7.3.2
The Axe-Fx II contains two
ADSR
or “envelope” generators that can be used as control
sources. ADSR stands for “attack, decay, sustain, release”—the four time segments that
determine how long it takes for the entire envelope to run its course. The graph below
illustrates this concept. Press the front panel
button to find the ADSR1 and ADSR2 menu pages for the
current preset.
MODE
– The mode determines how the ADSR generator operates in response to signals above the threshold.
ONCE
: The ADSR plays through when the threshold is exceeded.
LOOP
: The ADSR loops as long as the signal is above the threshold.
SUSTAIN
: The ADSR begins when the threshold is exceeded, but HOLDS at the sustain level until
the signal drops below the threshold, at which point the release phase occurs.
RETRIG
– When Retrigger is ON, the ADSR will reset to the beginning whenever the threshold is crossed from
below to above. If Retrigger is OFF, the ADSR must reach the end of its
release phase before it can be retriggered again.
ATTACK
– The envelope begins at zero and increases to 100% over the
duration of the attack time (A).
DECAY
– When the attack phase completes, the envelope descends for
the duration of the decay time (D) until it reaches the sustain level (L).
SUSTAIN, LEVEL
– After the decay, the envelope remains at the
sustain level (L) for the duration of the sustain time (S).
RELEASE
– At the end of the sustain phase, the envelope proceeds to
zero over the duration of the Release time (R).
THRESHOLD
– Sets the level at which the LFO will be triggered (or re-triggered; see MODE above).
