> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainlit.io/llms.txt
> Use this file to discover all available pages before exploring further.

# on_audio_chunk

Hook to react to an incoming audio chunk from the user's microphone.

## Usage

```python theme={null}
from io import BytesIO
import chainlit as cl


@cl.on_audio_chunk
async def on_audio_chunk(chunk: cl.InputAudioChunk):
    pass
```