EnvSeq

EnvSeq screenshot

EnvSeq is a clocked envelope sequencer. Each step outputs a configurable shape (ramp/exp/log/flat/VOSC), with per-step level (Amp), offset, probability (chance to play), duration in clocks, optional retriggers (repeating the shape within the step) with fade, and per-step length (time-warp of the shape inside the step).

I/O

  1/3 2/4
TRIG Clock (timebase) Reset (or step trigger when TR2 is enabled)
CV INs Mod 1 (per Mod1 mode) Mod 2 (per Mod2 mode)
OUTs Envelope CV Assignable (Out2 mode)

UI Controls

EnvSeq has two screens:

  • Main screen: Mod1 mode, Mod2 mode, Out2 mode, Randomizer, TR2 mode, number of steps, Reset, Init.
  • Step screen: Step number, shape (VOSC waveform index included), and per-step parameters (offset, amp, VOSC options, probability, triggers, clocks, length, retrigger fade, Mod2 mark, Copy/Paste).

Mod1 (CV1) modes

Mod1 defines how CV1 is sampled/applied:

Mode Description
Mod CV1 is applied continuously to every step’s CV output.
H step Sample & hold CV1 at each step start. The held value is used for the whole step.
H seq Sample & hold CV1 at the start of the sequence. The held value is used until the next sequence restart.

Mod2 (CV2) modes

Mode Description
Length CV2 modulates the Length parameter (time-warp of the shape within the step, bipolar, 1-200%)
StepSel CV2 selects the next played step (unipolar 0–5V mapped across the active num_steps). The selection is sampled on the clock when advancing steps. Step Probability is ignored in this mode, but multi-clock steps (Clk) are still honored (the current step holds until its clocks are done).
RetrgLvl CV2 modulates the Retrigger Level (-15..15). Negative values fade in (0%→100%), positive values fade out (100%→0%), 0 = no fade.
Mod CV2 is added to the output CV for all steps.
ModMark CV2 is added to the output CV only on steps marked with Mod2 in the step editor.
GateLen CV2 scales Gate Length (1–200% of the per-step gate length) for gate-based outputs.

Out2 modes

Output 2 can mirror or complement the main envelope output:

Out2 Mode Description
Cpy Copy of Out1 (same envelope CV)
Inv Mirrored copy of Out1 within the step’s amplitude range (vertical flip).
InvO Mirrored copy of Out1 around the step’s waveform offset (0–100% of amp).
HStart Holds the step’s start CV value until the next step begins
Step Short gate at each new (played) step
StepTrg Short gate at each new (played) step and retriggers within a step
Seq Short gate at the start of the sequence (on wraparound)

Notes:

  • Gates are only generated for steps whose Shape is neither Hold nor Zero.
  • Gate pulse length is set per step via Gate Length and can be modulated by GateLen.

Step screen

After the main page items, the cursor enters per-step editing. The viewed step (the one you edit) is independent from the currently playing step shown on the main page.

Step number

Select which step number you’re editing.

Shape

Shape for the step:

  • Hold: silent step (holds the previous step’s output CV and generates no gates)
  • Zero: outputs 0V but still counts as an active step (no gates generated)
  • Flat: constant level (Amp)
  • ExpDw: exponential-like Amp → 0
  • ExpUp: exponential-like 0 → Amp
  • RampDw: Amp → 0
  • RampUp: 0 → Amp
  • LogDw: logarithmic-like Amp → 0
  • LogUp: logarithmic-like 0 → Amp
  • VOSC: vector-oscillator waveform driven by step progress (shows a waveform number)

Parameters

Offset

DC offset added to the step output (and used as the center point for InvO).

Amplitude (amp)

Bipolar amplitude of the step’s shape; negative values invert the shape.

Waveform offset (WaveOff)

Shifts the waveform relative to the step offset (0–100% of the step amp). Applies only when the Shape is set to VOSC.

Revert

Runs the waveform phase backwards. Applies only when the Shape is set to VOSC.

Invert

Flips the waveform vertically. Applies only when the Shape is set to VOSC.

Option

Post-process the waveform. Applies only when the Shape is set to VOSC.

  • None: no post-processing.
  • FoldUp: reflect upward the values below waveform offset.
  • FoldDw: reflect downward the values above waveform offset.
  • ZeroUp: zero out values above waveform offset.
  • ZeroDw: zero out values below waveform offset.

Triggers

Sets how many times (1-8) the shape triggers within the step.

Clocks

How many incoming clocks (1-8) this step lasts.

Length

Time-warp of the shape progression within the step (1–200%).

  • <100%: shape reaches the end early and then holds its final value for the remainder of the step.

  • 100%: shape progresses more slowly (may not reach the end before the step completes).

  • If Mod2 mode is Length, CV2 scales this per-step value.

Probability (Prob)

Chance (0–100%) that this step will be played when the sequence reaches it.

Retrigger Level (RetrgLvl)

Sets the retrigger fade behavior in the range -15..15:

  • from 1 .. from 15: substract from first trigger and fade in from it to 100%
  • no: no fade (all retriggers at 100%)
  • to 1 .. to 15: substract from last trigger and fade out from 100% to it

Mod Mark

Marks this step as eligible for Mod2 when Mod2 mode is ModMark.

Gate Length (GateLen)

Sets the gate pulse length for gate-based outputs:

  • ~0.05–1000ms with an exponential curve
  • 1–100% of the step duration
  • If Mod2 mode is GateLen, CV2 scales this length

Copy / Paste

Copy the current step’s settings and paste them onto another step, even across hemispheres. Paste is only shown when the clipboard has data.

Random

Selecting Random on the main page opens a scrollable, checklist-style randomizer for step parameters:

  • Offset: randomize step Offsets
  • Amp: randomize step Amplitudes
  • Shape: randomize step Shapes
  • VOSC: allow randomizing VOSC waveform numbers when Shape is VOSC
  • Triggers: randomize step Triggers (occasionally)
  • Clocks: randomize step Clocks (occasionally)
  • Length: randomize step Lengths
  • Prob: randomize step probabilities (50-100%)
  • RetrgLvl: randomize step Retrigger Levels
  • ModMark: randomize step Mod2 marks
  • GateLen: randomize step Gate Lengths (1..50%)

Select Apply to apply randomization and return to the main view, or Back to exit without changes.

TR2

When enabled, TR2 (input 2) replaces TR1 as the step-advance trigger. TR1 still provides the clock timebase for step length. When disabled, TR1 advances steps and TR2 acts as Reset.

Linking (paired hemispheres)

When both hemispheres run EnvSeq, you can link them to add two extra modulation inputs and two extra outputs.

  • Link is enabled from the right hemisphere. On the right EnvSeq main screen, select Link to enter the linked view.
  • The right hemisphere becomes a linked control panel: it no longer runs its own sequence.
  • Mod3 / Mod4: the right hemisphere’s CV inputs become two additional modulation sources. Each has its own Mod mode (same list as Mod2).
  • Out3 / Out4: the right hemisphere’s outputs become two additional Out modes (same list as Out2).
  • The left hemisphere continues to run the sequence and computes the actual CV/gate values for Out3/Out4.
  • Select Unlink on the right to return to normal operation.

Credits

Authored by Daniel Gorgan