Filter 1 & 2, Filter 1: low-pass filter 2: state-variable – Dave Smith Instruments PRO 2 User Manual

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24 Filter 1 & 2

Dave Smith Instruments

Filter 1 & 2

Filters take the basic, raw sound of the oscillators and subtract frequen-

cies, changing the harmonic content and thereby the character of the

sound. This change can be varied over time using a filter envelope to

produce more dynamic, animated timbres. The Pro 2’s two-filter architec-

ture allows for a wide range of sonic possibilities and is one of its most

exciting features. Filter 1 is a 4-pole, 24 dB per-octave, analog resonant

low-pass filter. Filter 2 is a 2-pole, 12 dB per octave, analog state-variable

filter with low-pass, notch, high-pass, and band-pass modes.

The two filters can operate in series or in parallel with the

filter

routing

knob providing a variable mix of both modes. Used in series, audio is

passed first though Filter 1 then Filter 2. Used in parallel, audio is passed

simultaneously through each filter individually.

For even more processing flexibility, the

oScillator

Split

switch allows

you to send oscillators 1 & 2 to Filter 1 and oscillators 3 & 4 to Filter 2.

Oscillator Split

Enable

Link Filters

Cutoff

Resonance

Filter Routing

Notch

FILTER 1: LOW-PASS

FILTER 2: STATE-VARIABLE

In addition to the front panel controls for each filter, there are also several

parameters accessible through the OLED display.