---
title: "init(updatesPerSecond:historyDurationInSeconds:)"
framework: audiotoolbox
role: symbol
role_heading: Initializer
path: "audiotoolbox/audiounitparameterhistoryinfo/init(updatespersecond:historydurationinseconds:)"
---

# init(updatesPerSecond:historyDurationInSeconds:)

## Declaration

```swift
init(updatesPerSecond: Float32, historyDurationInSeconds: Float32)
```