---
title: releaseVelocity
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/midinotemessage/releasevelocity
---

# releaseVelocity

The key-release velocity for the note. Use 0 if you don’t want to specify a particular value.

## Declaration

```swift
var releaseVelocity: UInt8
```