---
title: "init(audioComponentDescription:)"
framework: avfaudio
role: symbol
role_heading: Initializer
path: "avfaudio/avaudiounittimeeffect/init(audiocomponentdescription:)"
---

# init(audioComponentDescription:)

Creates a time effect audio unit with the specified description.

## Declaration

```swift
init(audioComponentDescription: AudioComponentDescription)
```

## Parameters

- `audioComponentDescription`: The description of the audio unit to create.

## Return Value

Return Value A new AVAudioUnitTimeEffect instance.

## Discussion

Discussion The componentType field of the description structure must be kAudioUnitType_FormatConverter (”aufc”); otherwise, the method raises an exception.