---
title: "absorption(_:)"
framework: realitykit
role: symbol
role_heading: Instance Method
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: "realitykit/audio/material/absorption(_:)"
---

# absorption(_:)

Creates a new audio material with the provided absorption data.

## Declaration

```swift
func absorption(_ data: Audio.Absorption) -> Audio.Material
```

## Discussion

Discussion Example usage: let material: Audio.Material = .concrete.absorption([500: 0.3, 1000: 0.4, 4000: 0.5])