---
title: "init(mFormat:mChannelLayoutTag:)"
framework: audiotoolbox
role: symbol
role_heading: Initializer
path: "audiotoolbox/cafaudioformatlistitem/init(mformat:mchannellayouttag:)"
---

# init(mFormat:mChannelLayoutTag:)

## Declaration

```swift
init(mFormat: CAFAudioDescription, mChannelLayoutTag: UInt32)
```