LFO & Control Screens · Nathan Sheldon

Triangle

The parameters are the same on every LFO screen:

Rate: the LFO’s frequency.
Ext Sync: syncs the LFO to the sequencer clock.
Fade Mode: when the LFO fades in or out, at key on or key off.
Delay Time: how long before the fade begins.
Fade Time: how long the fade takes.
Offset: +100, +50, 0, −50 or −100, shifting the LFO above or below its center.
Depth: how strongly the LFO affects the Tone’s pitch, filter, level and pan.

Sine

Sawtooth

Square

Trapezoid

Sample & hold

XP-80 LFO screen with the sample and hold waveform

Similar to Random. The difference is that Random’s level is sampled and held for a random length of time before being sampled again.

Random

Chaos

Essentially Random at maximum rate. The Rate setting has no effect on it.

Control parameters

Up to three controllers can shape how one or both LFOs affect one or more Tones in a Patch. Common Source 1 is always Modulation; you choose the other two. Each controller can have up to four destinations per Tone: for example, Modulation could increase LFO1’s effect on both the Tone’s pitch and its level.

The other sources can be System Controller 1 or 2, Modulation, Breath, Foot, Volume, Pan, Expression, Pitch Bend, Aftertouch, LFO1, LFO2, Velocity, Keyfollow or Playmate.

Control switches

Sets whether the Patch responds to MIDI Volume, whether Pan changes the sound continuously or only from the next note (or not at all), and whether it accepts Pitch Bend and Hold-1 (the hold pedal).

Redamper can be turned on or off. It works like a piano’s damper pedal: if a Tone is still in its release when you press the hold pedal, the sound is sustained at its current level until you let go.