---
title: defaultMedium
framework: phase
role: symbol
role_heading: Instance Property
path: phase/phaseengine/defaultmedium
---

# defaultMedium

The physical matter through which sound travels.

## Declaration

```swift
var defaultMedium: PHASEMedium { get set }
```

## See Also

### Defining Environmental Effects

- [defaultReverbPreset](phase/phaseengine/defaultreverbpreset.md)
- [outputSpatializationMode](phase/phaseengine/outputspatializationmode.md)