---
title: "appendAudioSampleBuffer(_:)"
framework: speech
role: symbol
role_heading: Instance Method
path: "speech/sfspeechaudiobufferrecognitionrequest/appendaudiosamplebuffer(_:)"
---

# appendAudioSampleBuffer(_:)

Appends audio to the end of the recognition request.

## Declaration

```swift
func appendAudioSampleBuffer(_ sampleBuffer: CMSampleBuffer)
```

## Parameters

- `sampleBuffer`: A buffer of audio.

## Discussion

Discussion The audio must be in a native format.

## See Also

### Appending Audio Buffers

- [append(_:)](speech/sfspeechaudiobufferrecognitionrequest/append(_:).md)
- [endAudio()](speech/sfspeechaudiobufferrecognitionrequest/endaudio().md)