---
title: "init(channel:note:velocity:releaseVelocity:duration:)"
framework: audiotoolbox
role: symbol
role_heading: Initializer
path: "audiotoolbox/midinotemessage/init(channel:note:velocity:releasevelocity:duration:)"
---

# init(channel:note:velocity:releaseVelocity:duration:)

## Declaration

```swift
init(channel: UInt8, note: UInt8, velocity: UInt8, releaseVelocity: UInt8, duration: Float32)
```