---
title: unit
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/audiounitparameterinfo/unit
---

# unit

If the unit field contains a value not in the AudioUnitParameterUnit enumeration, then assume the unit type is kAudioUnitParameterUnit_Generic.

## Declaration

```swift
var unit: AudioUnitParameterUnit
```