---
title: PHASEMaterial
framework: phase
role: symbol
role_heading: Class
path: phase/phasematerial
---

# PHASEMaterial

Surface characteristics that determine the acoustic properties of an object.

## Declaration

```swift
class PHASEMaterial
```

## Mentioned in

Playing sound from a location in a 3D scene

## Overview

Overview To specify the physical texture of a sound source or occluder, define the materials argument of the PHASEShape initializer, init(engine:mesh:materials:). The PHASEMaterialPreset contains the surface types with which you define the preset argument of this class’s init(engine:preset:) initializer.

## Topics

### Creating a Material

- [init(engine:preset:)](phase/phasematerial/init(engine:preset:).md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Soundscape Creation

- [PHASESource](phase/phasesource.md)
- [PHASEListener](phase/phaselistener.md)
- [PHASEOccluder](phase/phaseoccluder.md)
- [PHASEObject](phase/phaseobject.md)
- [PHASEShape](phase/phaseshape.md)
- [PHASEShape.Element](phase/phaseshape/element.md)
- [PHASEMaterialPreset](phase/phasematerialpreset.md)
- [PHASEMixerParameters](phase/phasemixerparameters.md)