User Manual

MODULATION

Iris 2 | LFOS Page 54

Restart (on by default): With Restart turned on the LFO will restart its cycle each

time a new note is played. With restart turned o as long as a voice is playing in

Iris that LFO will continue to oscillate. This allows for slow-moving modulation over

time while playing shorter notes.

Rate: This controls the speed at which the LFO will cycle through its waveform.

The faster the rate, the faster your parameter will move between values.

Depth: This deﬁnes how much of the modulation knob’s range the LFO will be

applied to. A depth of 0.5 will cause the LFO to only traverse half of the modulation

range set in the modulation range knob.

Phase: This tells the LFO where along the x-axis to start playing the LFO waveform.

Attack: This sets the amount of time the LFO takes to ramp up to its full depth.

LFO Types & Shapes

Iris 2 oers a broad variety of LFO shapes and the capability to morph between them. This is

made possible by using a wavetable oscillator for each LFO. Included with Iris 2 are twenty

types of oscillator shapes, each with a range of variations that can be adjusted with the Shape

Slider or by dragging on the waveform display. Modulating the Shape Slider allows you to

morph between these shapes using a Modulation Source.

The types of oscillator shapes are grouped into four categories:

Analog

Modeled after pivotal vintage synths from the 50’s to the 80’s, the Analog category contains

classic Sine, Square, Saw, Triangle and Sample & Hold shapes to add classic modulation to

your patch. Adjust the LFO shape slider to move from harder (left) to softer (variants) of each

analog shape.

Curve

The Curve category consists of a range of gradual sloping modulation shapes that are not

typically found on classic Analog synths but are nonetheless extremely musical. Without any

hard edges, each Curve shapes has its own ﬂavor and provides an alternative to more generic

forms of LFO modulation.