Noise Engineering Pons Asinorum

Name: Pons Asinorum
Brand: Noise Engineering

Four-channel CV envelope and LFO in 6HP

6 HP Eurorack module

Pons Asinorum is a compact four-channel voltage-controlled linear envelope generator and LFO in 6HP. Each channel can independently operate as a triggered envelope or a free-running LFO, with three shape modes and CV control over cycle length. Its single-encoder control scheme and channel select buttons make live adjustments across multiple channels fast and intuitive.

Features

Four independent envelope/LFO channels in 6HP
Three shape modes: ramp up, up/down triangle, ramp down
Per-channel LFO mode with phase reset via trigger
Single Length Encoder controls all selected channels simultaneously
Channel select buttons allow multi-channel editing or isolation
Encoder press resets selected channels to minimum length; tap again to undo
Hit button triggers selected channels in envelope mode or resets LFO phase
CV inputs per channel for voltage-controlled cycle length
Trigger inputs circularly normalled: trigger any unpatched channel to fire all
Circular normalling breaks when additional trigger cables are patched
CV range switchable per channel: short (up to 95s) or long (up to 320s)
CV response switchable globally: continuous or sample and hold (set at power-up)

Controls & Jacks (27)

Select 1— Selects or deselects Channel 1 for editing. When selected, the channel LED is active.
Select 1 LED— LED indicator showing Channel 1 selection status and relative cycle length.
Select 2— Selects or deselects Channel 2 for editing. When selected, the channel LED is active.
Select 2 LED— LED indicator showing Channel 2 selection status and relative cycle length.
Select 3— Selects or deselects Channel 3 for editing. When selected, the channel LED is active.
Select 3 LED— LED indicator showing Channel 3 selection status and relative cycle length.
Select 4— Selects or deselects Channel 4 for editing. When selected, the channel LED is active.
Select 4 LED— LED indicator showing Channel 4 selection status and relative cycle length.
Value— Rotary encoder that sets the cycle length of all currently selected channels. Pressing resets to minimum length.
Hit— Tap to trigger selected channels in envelope mode or reset LFO phase. Hold 2 seconds to toggle LFO mode.
AR— Three-position switch that sets the envelope shape for all four channels: ramp up, up/down, or ramp down.
CV In 1— CV input that extends Channel 1 cycle length beyond what the encoder sets. Responds to 0V-5V.
CV In 2— CV input that extends Channel 2 cycle length beyond what the encoder sets. Responds to 0V-5V.
CV In 3— CV input that extends Channel 3 cycle length beyond what the encoder sets. Responds to 0V-5V.
CV In 4— CV input that extends Channel 4 cycle length beyond what the encoder sets. Responds to 0V-5V.
In 1— Trigger input for Channel 1. Rising edge fires envelope or resets LFO phase. Circularly normalled.
Out 1— Output for Channel 1 envelope or LFO signal. Outputs 0V-5V.
Channel 1 LED— LED indicator for Channel 1 output activity.
In 2— Trigger input for Channel 2. Rising edge fires envelope or resets LFO phase. Part of circular normalling chain.
Out 2— Output for Channel 2 envelope or LFO signal. Outputs 0V-5V.
Channel 2 LED— LED indicator for Channel 2 output activity.
In 3— Trigger input for Channel 3. Rising edge fires envelope or resets LFO phase. Part of circular normalling chain.
Out 3— Output for Channel 3 envelope or LFO signal. Outputs 0V-5V.
Channel 3 LED— LED indicator for Channel 3 output activity.
In 4— Trigger input for Channel 4. Rising edge fires envelope or resets LFO phase. Part of circular normalling chain.
Out 4— Output for Channel 4 envelope or LFO signal. Outputs 0V-5V.
Channel 4 LED— LED indicator for Channel 4 output activity.

How-To Guides

Basic Single Envelope
Basic LFO
Quadrature LFO
CV-Controlled LFO Bank
Percussion Envelope Bank
Self-Patched Evolving Lengths
Ultra-Slow Texture LFO
Mixed Envelope and LFO Patch
Sample and Hold Stepped Envelope Times
Manual Performance Triggering

Explore the interactive Pons Asinorum panel on BleepDex — tap any control to learn what it does.