ALESIS QS7 - Manual (Page 79)

Editing Programs: Chapter 6
Trigger (Mono, Poly, Key Mono, or Key Poly) Page 4
The Trigger parameter determines how the LFO should be triggered, or started.
There are four possible settings: Mono, Poly, Key Mono and Key Poly. When playing
multiple voices in a single sound, each voice has its own LFO. However, the LFO
Trigger parameter determines whether or not they should be in sync, and whether or
not they can be retriggered independent from one another.
Mono. All voices’ LFOs are in sync with each other. If you hold a chord and then play
new notes on top of the chord, all voices’ LFOs will be moving in the same direction
and at the same speed. Because of this, modulating the LFO Speed using a voice-
specific source (such as velocity or one of the envelopes, for example) will have no
effect (you will be allowed to do this, but you won’t hear any difference). This is
because these modulation sources are meant for polyphonic purposes. These include:
Note Number, Velocity, Release Velocity, Pitch/Filter/Amp LFO, Pitch/Filter/Amp
Envelope, Random, Trig Rate and Tracking Generator. However, modulation sources
which are not voice-specific will still have an effect while the LFO Trigger is set to
MONO. These include: Aftertouch, Mod Wheel, Pitch Wheel, MIDI Volume, Sustain
Pedal, Pedal 1, Pedal 2, and Controllers A–D.
Poly. Each voice’s LFO is independent. If you hold a chord, some voices’ LFOs will
be moving in one direction while others move in the other direction. If the LFO Speed
is being modulated (by one of the envelopes, for example), the LFO’s of each voice
may be running at different speeds.
Key Mono. This is identical to MONO, but whenever a new note is played, the LFO is
retriggered, instead of continuing from wherever it may be in its cycle.
Key Poly. This is almost identical to POLY, but whenever a new note is played, the
LFO is retriggered, instead of continuing from wherever it may be in its cycle.
Level (00 to 99) Page 5
This is the base output level of the Pitch LFO. If you want to have a constant value of
vibrato, even without using the Mod Wheel or Aftertouch, set LEVEL above 00. The
Mod Wheel and Aftertouch will add or subtract from this base level. Example: If Level
is set to 10 and the Mod Wheel parameter is set to 10, there will always be some
vibrato, and raising the Mod Wheel will add more vibrato. On the other hand, if the
Mod Wheel parameter is set to -10, raising the Mod Wheel to the top will cancel out
all vibrato.
Mod Wheel Depth (-99 to 99) Page 6
This is the modulation amount of the Mod Wheel over the Pitch LFO’s Level. A
positive value raises the level when the Mod Wheel is moved up, and lowers the level
when moved down. Negative settings of this parameter will decrease the output level
of the Pitch LFO as the Mod Wheel is raised. Since the output level of the Pitch LFO
cannot be less than zero, a negative setting of the Mod Wheel parameter will have no
effect unless either the Aftertouch or the Level is set to raise the Pitch LFO output. If
both the Level and Aftertouch are set to 00, and the Mod Wheel parameter is set to
-99, the Mod Wheel will have no effect on the vibrato from the Pitch LFO.
QS7/QS8 Reference Manual 77