How Does It Work?#

Ladder Half is a 2-pole ladder lowpass filter that keeps the familiar ladder response but with a more open top end and a gentler slope than the 4-pole version.

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Quick Overview#

• Ladder Half is a single-input, single-output lowpass filter.
• It uses the same basic control set as the full ladder modules: Cutoff, Q, and matching CV inputs.
• The cutoff range is 20 Hz to 20000 Hz.
• Resonance ranges from 0.707 to 25.
• Its 2-pole response is less steep than Ladder LPF.

Inputs And Outputs#

Port	Type	What It Does
In	Audio	Signal to be filtered.
Cut	CV	Modulates cutoff frequency.
Res	CV	Modulates resonance (Q).
Out	Audio	Filtered lowpass output.

Controls Reference#

Control	Range	Default	Behavior
Cutoff	20..20000 Hz	20000 Hz	Sets the lowpass cutoff point.
Q	0.707..25	1	Sets resonance around the cutoff.

CV Behavior#

• Cut applies exponential cutoff modulation.
• Res applies linear modulation to resonance and is clamped to the valid Q range.
• Parameter smoothing is built into the DSP to keep sweeps stable.

Character Notes#

• This is the lighter ladder option in the set.
• It keeps more brightness than the 4-pole ladder while still sounding recognizably analog.
• It is a good fit when Ladder LPF feels too heavy or too closed-in.