---
title: AUParameterGroup
framework: audiotoolbox
role: symbol
role_heading: Class
path: audiotoolbox/auparametergroup
---

# AUParameterGroup

A parameter group object represents a group of related audio unit parameters.

## Declaration

```swift
class AUParameterGroup
```

## Overview

Overview A parameter group is KVC-compliant for its children. For example, calling the parameter group’s value(forKey:) method, with a key value of volume, returns a child whose identifier value matches that key.

## Topics

### Obtaining Group Parameters

- [allParameters](audiotoolbox/auparametergroup/allparameters.md)
- [children](audiotoolbox/auparametergroup/children.md)

### Initializers

- [init(coder:)](audiotoolbox/auparametergroup/init(coder:).md)

## Relationships

### Inherits From

- [AUParameterNode](audiotoolbox/auparameternode.md)

### Inherited By

- [AUParameterTree](audiotoolbox/auparametertree.md)

### Conforms To

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

## See Also

### Parameters

- [AUParameter](audiotoolbox/auparameter.md)
- [AUParameterNode](audiotoolbox/auparameternode.md)
- [AUParameterTree](audiotoolbox/auparametertree.md)