---
title: "init(tempo:)"
framework: avfaudio
role: symbol
role_heading: Initializer
path: "avfaudio/avextendedtempoevent/init(tempo:)"
---

# init(tempo:)

Creates an extended tempo event.

## Declaration

```swift
init(tempo: Double)
```

## Parameters

- `tempo`: The tempo in beats per minute as a positive value.

## Discussion

Discussion The new tempo begins at the timestamp for this event.