# VAD

## Overview

The example shows recording sound with VAD and playing sound with DAO.

## Board Setting

Connect speaker to DAO interface on board.

## Known issues

When using DAO to play some audio, it may generate noise.

## Running the example

When the example runs successfully, make some sound according to the log prompt, the sound will be recorded and played back. The following message is displayed in the terminal:
```console
vad example
vad calibration done
Recording...
Please make some sound to mic0
Got something...
Recorded 204800 bytes data
Now, playing...
```