---
title: "Audio Output and Devices | Micdrop"
description: "Play the assistant voice on the loudspeaker or on the earpiece, and pick the microphone among the inputs the phone offers."
url: "https://micdrop.dev/docs/react-native/audio-output"
---

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[Micdrop](/) › [Documentation](/docs/getting-started)

# Audio Output and Devices

## Loudspeaker or earpiece

A phone has one decision to make about output: whether the voice comes out loud or against the ear.

```
import {  EARPIECE_DEVICE,  Micdrop,  SPEAKER_DEVICE,} from '@micdrop/react-native'
await Micdrop.changeSpeakerDevice(EARPIECE_DEVICE)await Micdrop.changeSpeakerDevice(SPEAKER_DEVICE)
```

The two routes are what `speakerDevices` lists on a phone, so the same code that picks an output in a browser works here. The current one is in the state:

```
const state = useMicdropState()const onEarpiece = state.speakerDeviceId === EARPIECE_DEVICE
const handlePress = () =>  Micdrop.changeSpeakerDevice(onEarpiece ? SPEAKER_DEVICE : EARPIECE_DEVICE)
```

Headphones and Bluetooth are handled by the operating system: plugging them in moves the call over, whatever was chosen here.

## Choosing the microphone

The inputs the OS reports are in the state, and the call can be moved to another one without interrupting it:

```
const state = useMicdropState()
state.micDevices.map((device) => (  <Button    key={device.id}    title={device.name}    onPress={() => Micdrop.changeMicDevice(device.id)}  />))
```

Each device carries an `id` and a `label` to show. The list is filled once the call has started, since the audio session has to be active for the system to answer.

## Echo

The audio session is configured as a voice call, which is what tells iOS and Android to apply echo cancellation. Without it, the microphone would hear the assistant and the call would interrupt itself.

On a device where cancellation is weak, turn interruption off so the microphone is ignored while the assistant speaks:

```
await Micdrop.start({  url: 'wss://example.com/call',  disableInterruption: true,})
```

[Previous← Hooks and Call State](/docs/react-native/hooks)[NextVoice Activity Detection (VAD) →](/docs/react-native/vad)

On this page

*   [Loudspeaker or earpiece](#loudspeaker-or-earpiece)
*   [Choosing the microphone](#choosing-the-microphone)
*   [Echo](#echo)