# arcSpeedMultiplier

> A multiplier of the arc speed of the particle emission shape.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public float arcSpeedMultiplier { get; set; }
```

### Remarks

Changing this property is more efficient than accessing the entire curve, if you only want to change the overall speed multiplier. Additional Resources: [ParticleSystem.ShapeModule.arcMode](/engine/6000.0/script-reference/unityengine/particlesystem/shapemodule/arcmode.md), [ParticleSystemShapeMultiModeValue](/engine/6000.0/script-reference/unityengine/particlesystemshapemultimodevalue.md), [ParticleSystem.ShapeModule.shapeType](/engine/6000.0/script-reference/unityengine/particlesystem/shapemodule/shapetype.md).