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# Factorio Prototype Docs Version 2.0.77

# Fade - Prototype Docs

## Fade :: struct or AttenuationType

Inherits from Attenuation
Children PersistentWorldAmbientSoundsDefinitionCrossfade

## Properties

- default
- sorted

from optional | :: ControlPoint |
to optional | :: ControlPoint |

Inherited from Attenuation

curve_type | :: AttenuationType |
tuning_parameter optional | :: float |

from optional | :: ControlPoint |
to optional | :: ControlPoint |

Inherited from Attenuation

curve_type | :: AttenuationType |
tuning_parameter optional | :: float |

## Properties

### from :: ControlPoint optional

### to :: ControlPoint optional

Type used in

- AdvancedVolumeControl::attenuation
- Fades::fade_in
- Fades::fade_out