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

# append(_:)

Appends audio in the PCM format to the end of the recognition request.

## Declaration

```swift
func append(_ audioPCMBuffer: AVAudioPCMBuffer)
```

## Parameters

- `audioPCMBuffer`: An audio buffer that contains audio in the PCM format.

## Discussion

Discussion The audio must be in a native format and uncompressed.

## See Also

### Appending Audio Buffers

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