---
title: AVAudioUnitEQ
framework: avfaudio
role: symbol
role_heading: Class
path: avfaudio/avaudiouniteq
---

# AVAudioUnitEQ

An object that implements a multiband equalizer.

## Declaration

```swift
class AVAudioUnitEQ
```

## Overview

Overview The AVAudioUnitEQFilterParameters class encapsulates the filter parameters that the bands property array returns.

## Topics

### Creating an equalizer

- [init(numberOfBands:)](avfaudio/avaudiouniteq/init(numberofbands:).md)

### Getting and setting the equalizer values

- [AVAudioUnitEQFilterParameters](avfaudio/avaudiouniteqfilterparameters.md)
- [bands](avfaudio/avaudiouniteq/bands.md)
- [globalGain](avfaudio/avaudiouniteq/globalgain.md)

## Relationships

### Inherits From

- [AVAudioUnitEffect](avfaudio/avaudiouniteffect.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)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Audio effects

- [AVAudioUnitEffect](avfaudio/avaudiouniteffect.md)
- [AVAudioUnitDistortion](avfaudio/avaudiounitdistortion.md)
- [AVAudioUnitDelay](avfaudio/avaudiounitdelay.md)
- [AVAudioUnitReverb](avfaudio/avaudiounitreverb.md)