User Manual

MASTER PANEL

Iris 2 | MASTER EFFECTS Page 35

Screaming Peak (Peak): Less of a ﬁlter and more of an analog resonant boost,

Screaming Peak provides strong saturated-valve resonant peak at the cuto

frequency speciﬁed. Use the Resonance control to adjust the strength of the peak.

Note: New York and Tokyo ﬁlter models use 3-4% more CPU power than the others.

Master Filter Controls

The Master Filter has two modulatable controls: Filter Cuto and Filter Resonance.

Filter Cuto is the frequency at which the ﬁlter begins to take eect. In Iris 2 the ﬁlters have

a range of 30 Hz to 20,000 kHz, and Filter Cuto will default to 800 Hz. This means that in its

default setting, if you were to engage one of the Low Pass ﬁlters, frequencies above 800 Hz

would gradually be ﬁltered out. This is one of the most commonly modulated parameters in

synthesis.

An envelope applied to Filter Cuto on a low-pass ﬁlter can have the eect of opening the

ﬁlter (raising the cuto frequency so the entire spectrum is passed through) when a key is

depressed, and then closing the ﬁlter while the note sustains. A host-synced LFO attached to

Filter Cuto on a ﬁlter can provide exciting rhythmic eects.

Filter Resonance is a natural byproduct of active analog ﬁlter circuits, and simply means that

certain harmonics (usually right below the cuto frequency) will be boosted (or resonate) when

ﬁltering is activated. Because the ﬁlters in Iris 2 are authentic analog models, this resonance is

built in, but the amount can be adjusted using the Filter Resonance control. This control has a

range of .05 to .95 with no particular unit assigned to it. It defaults to .10.

The Track knob automatically routes Key Tracking to Filter Cuto to allow the Master Filter

to be gradually scaled to be more open or closed depending on the pitches of the incoming

notes. With positive Filter Tracking values, as higher notes are played on your keyboard, the

Filter Cuto frequency will be proportional raised to allow higher frequencies through. This

is done to mimic the eect of higher notes sounding “brighter.” Conversely, negative Filter

Tracking values will progressively close the Filter Cuto frequency as lower notes are played

on the keyboard.

MASTER EFFECTS

Iris 2 has four dedicated eects processors that can be selected to operate in Send Mode (a

gain control that controls the amount of eects applied to each individual sample) or Master

Mode (a dry/wet control that adjusts the balance of how much of the eects will be applied to

the complete mix of all the samples).