User Manual

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Oscillators

SKULPT synthesiser features 2 unique morphable waveform oscillators identiﬁed by Wave 1

and Wave 2 labels. It has a total of 32 oscillators inside, that’s 4 voices with 8 oscillators per

voice.

• Wave 1: This encoder allows you to sweep continuously thru the waveforms from Sine -

Triangle - Saw - Square - PWM.

• Wave 2: This encoder allows you to sweep continuously thru the waveforms from Sine -

Triangle - Saw - Square - Noise - Low Pass Filter down to -inf dB.

• Mix: The Mix encoder allows you to balance the volume between each wave. All the way

to the left you will hear only Wave 1, All the way to the right you will hear Wave 2. In the

centre you will hear a balanced blend of both waves.

• Fine: Holding the Shift key and turning this encoder allows us to control the ﬁne tuning

of Wave 2 (Fine) +/- 100 cents

• Tune: Holding the Shift key and turning this encoder allows us to control the coarse

tuning of Wave 2 (Tune) at desirable intervals +/- 4 octaves.

Note: assigning modulation to the Tempo / Swing knob will control the Global Tune of

the oscillators.

• FM: Holding the shift key and turning this encoder controls the FM amount between

Waves where Wave 1 is the carrier and Wave 2 is the modulator. This means that Wave 2

is modulating Wave 1 up to a maximum of +/- 4 octaves & 100 cents.

Because of the wide range of Wave 2 detune and the ﬂexibility of the LFOs, this can be

used to create a huge array of effects, from adding rich harmonics to interesting low-

frequency modulations.

• Ring Mod: Holding shift and pressing the LFO2 button causes ring mod to be enabled

and disabled. By default Ring Mod is disabled. Enabling it will cause the LFO 2 LED to

ﬂash in an on or off direction, depending on whether LFO 2 is being edited or not.

Ring modulation is a form of amplitude modulation where a modulating wave (Wave 1)

affects a carrier waveform (Wave 2). The effect generates new harmonics that are the

sum and difference of all frequencies present in the two waves used to generate the

effect, but this also causes the original frequencies in the carrier signal to disappear.

Filter

SKULPT synthesiser uses a Modal designed state variable 2-pole resonant ﬁlter (capable of

morphing from low pass, through band pass, to high pass).

• Cutoff: This parameter controls the low-pass ﬁlter cutoff frequency. This affects the

cutoff frequency of the ﬁlter, from 0Hz up to 20kHz.

• Reso: This parameter controls the amount of resonance of the ﬁlter.

• Filt-EG: Holding the shift key and turning this encoder allows bipolar control of the Filter-

EG amount. (See the Envelopes section)

• Morph: Holding the shift key and turning this encoder allows control of the shape of the

ﬁlter: note that the ﬁlter is low-pass by default.

- At it’s minimum value you have a low pass ﬁlter;

- We move through a sort of low-shelving;

- At It’s midpoint we have a band-pass ﬁlter;

- At it’s maximum value a 1-pole high-pass ﬁlter.

TIP: With this feature at lower settings you can dampen the low frequencies while

maintaining a rich high-end texture.