---
title: "Audio.DistanceAttenuation.rolloff(factor:)"
framework: realitykit
role: symbol
role_heading: Case
path: "realitykit/audio/distanceattenuation/rolloff(factor:)"
---

# Audio.DistanceAttenuation.rolloff(factor:)

A standard geometric model for attenuating audio intensity naturally with distance, using a specified loss strength factor.

## Declaration

```swift
case rolloff(factor: Double)
```

## Parameters

- `factor`: The attenuation model’s loss strength factor in the range of [0, Double.infinity].

## Discussion

Discussion The case’s default value is 1.0, which attenuates spatial audio as the listener moves away from the source, similar to real-world physics. You can increase or decrease this effect by changing factor to other values. For example: 0.5 reduces the effect by 50% 2.0 doubles the effect 0.0 completely disables attenuation