---
title: bufferDuration
framework: speech
role: symbol
role_heading: Instance Property
path: speech/analyzerinput/bufferduration
---

# bufferDuration

The length of this input.

## Declaration

```swift
let bufferDuration: CMTime
```

## See Also

### Inspecting an input element

- [bufferStartTime](speech/analyzerinput/bufferstarttime.md)
- [bufferFormat](speech/analyzerinput/bufferformat.md)
- [buffer](speech/analyzerinput/buffer.md)