***

id: fc46fe7a-7fcf-4627-bafb-83f19aa84373
title: updateMicrophone
slug: /js/reference/video/room-session/update-microphone
description: updateMicrophone method for the RoomSession class.
max-toc-depth: 3
----------------

### updateMicrophone

* **updateMicrophone**(`constraints`): `Promise<void>`

Replaces the current microphone stream with the one coming from a different device.

#### Parameters

<ParamField path="constraints" type="MediaTrackConstraints">
  Specify the constraints that the device should satisfy. See [MediaTrackConstraints](https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints).
</ParamField>

#### Returns

`Promise<void>`

#### Example

Replaces the current microphone stream with the one coming from the specified deviceId:

```javascript
await roomSession.updateMicrophone({
  deviceId: "/o4ZeWzroh+8q0Ds/CFfmn9XpqaHzmW3L/5ZBC22CRg=",
});
```