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# Factorio Prototype Docs Version 2.0.77

# Attenuation - Prototype Docs

## Attenuation :: struct - abstract

Children Fade PersistentWorldAmbientSoundsDefinitionCrossfade

## Properties

- default
- sorted

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

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

## Properties

### curve_type :: AttenuationType

### tuning_parameter :: float optional

Default: `-1`