> For the complete documentation index, see [llms.txt](https://manual.minimal.audio/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.minimal.audio/current-manual/modulation/curve-sequencer.md).
# Curve Sequencer
***
### Overview
The curve sequencer allows you to create custom modulation shapes using a variety of draw tools and precise editing features. It's versatile enough for both sequencing and LFO tasks. Use different shape tools to create rhythmic patterns, generate random shapes and save them as sub-presets, and more.
***
### 1. Curve Presets
The Curve modulator includes sub-presets that can be saved and loaded from the top bar of the preset area, allowing you to easily reuse your favorite modulation shapes.
***
### 2. Trigger Modes
Choose how the modulator responds to incoming MIDI notes:
* **Free.** The modulator will not respond to MIDI and will instead be synced to the DAW's timeline position.
* **Trigger.** The modulator will be triggered by incoming MIDI and loop continuously after being triggered.
* **One-Shot.** The modulator will be triggered by incoming MIDI and will only play through once each time a note is played.
***
### 3. Main Controls
**Rate.** Adjust the Curve modulator’s **Rate**.
**Level.** Attenuate and invert the modulator's output signal. This will impact the modulation wherever it is assigned.
**Sync.** Enable BPM synchronization for the curve rate.
***
### 4. Curve Editor Settings
**Undo.** Undo previous changes to the **Curve** editor.
**Redo.** Redo previous changes to the **Curve** editor.
**Horizontal Grid Division.** Choose how the Curve Editor is rhythmically divided:
* **Standard.** Grid divisions divisible by two.
* **Triplet.** Grid divisions that fit onto a triplet grid.
* **Odd.** Grid divisions that do not fit on a standard or triplet grid.
**Vertical Grid Division.** Choose how the **Curve Editor´s** modulation level is divided. This can be useful for snapping the **Curve** to precise values needed for tasks such as pitch modulation.
**Clean Curve.** Reset the current **Curve** shape.
**Snap to Grid.** When active, all edits will snap to the horizontal and vertical grid.
**Randomize Curve.** Generate different types of modulation shapes.
Try changing the Curve's grid sizes to adjust how the shapes are generated.
Right-click on the randomize button to select a specific randomization type.
* **Random Shape.** Randomly generate any of the following types.
* **Smooth.** Shapes similar to sine waves.
* **Linear.** Shapes similar to triangle waves.
* **Chaos.** Complex shapes that are not always on the grid.
* **Steps.** Step sequencer patterns.
* **Segments.** A combination of steps and linear ramps.
* **Gates.** Sequences for turning signals on and off.
* **Ramp Down.** Stab and downward sweeping shapes.
* **Ramp Up.** Pumping and upward sweeping shapes.
***
### 5. Curve Editor
Use the Curve Editor to create custom modulation shapes.
When the mouse tool is selected, you can click and drag to select multiple points, and the following key commands are available:
* **Move Off Grid.** Hold down **shift** while dragging on a point.
* **Straighten Curve.** **Shift-click** on a line or selection.
* **Move Segment.** **Command-click** and drag on a line.
* **Move Segment.** **Control-click** and drag on a line.
* **Delete Point.** **Double-click** on an existing point.
***
### 6. Draw Tools
On the right side of the Curve Editor, you'll find the draw tool buttons. The mouse tool allows for manual drawing and editing of shapes, while the other tools create shapes based on the current grid division settings.
**Slope.** Adjust the shape of the currently selected draw tool.
**Invert.** When active, the shape tools will be inverted, providing even more options.
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