---
title: frameDuration
framework: speech
role: symbol
role_heading: Instance Property
path: speech/sfacousticfeature/frameduration
---

# frameDuration

The duration of the audio frame.

## Declaration

```swift
var frameDuration: TimeInterval { get }
```

## See Also

### Inspecting a feature

- [acousticFeatureValuePerFrame](speech/sfacousticfeature/acousticfeaturevalueperframe-5krkk.md)