---
title: fadeOutParameters
framework: phase
role: symbol
role_heading: Instance Property
path: phase/phasedistancemodelparameters/fadeoutparameters
---

# fadeOutParameters

A distance over which the framework fades out the mixer’s sound.

## Declaration

```swift
var fadeOutParameters: PHASEDistanceModelFadeOutParameters? { get set }
```

## Discussion

Discussion As a sound source’s distance between the listener approaches the value of this property, the framework gradually lowers the sound’s volume to 0. Beyond this distance, PHASE culls the sound. This property offers an additional fade out that the framework applies on top of the spatial mixer’s distanceModelParameters. The framework calculates distance as the difference between the listener’s position and the sound-source position, scaled by the engine’s unitsPerMeter.