> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# CallParticipant

> Base participant interface for call participants Defines the full public contract for participant objects exposed by Call

Base participant interface for call participants
Defines the full public contract for participant objects exposed by Call

## **Extended by**

* [`CallSelfParticipant`](/docs/browser-sdk/v4/reference/interfaces/call-self-participant)

## **Properties**

**`addressId`** `string | undefined` — required

User-address ID, if this participant is a known user.

---

**`addressId$`** `Observable<string | undefined>` — required

Observable of user-address ID, if this participant is a known user.

---

**`audioMuted`** `boolean` — required

Whether this participant's audio is muted.

---

**`audioMuted$`** `Observable<boolean | undefined>` — required

Observable of whether this participant's audio is muted.

---

**`autoGain`** `boolean` — required

Whether automatic gain control is enabled on this participant's microphone.

---

**`autoGain$`** `Observable<boolean | undefined>` — required

Observable of whether automatic gain control is enabled on this participant's microphone.

---

**`callId`** `string | undefined` — required

Call ID for this participant's leg — the participant's own call context, not necessarily the local call's ID.

---

**`deaf`** `boolean` — required

Whether this participant is deafened (does not receive other participants' audio).

---

**`deaf$`** `Observable<boolean | undefined>` — required

Observable of whether this participant is deafened (does not receive other participants' audio).

---

**`denoise`** `boolean` — required

Whether noise suppression is enabled on this participant's microphone.

---

**`denoise$`** `Observable<boolean | undefined>` — required

Observable of whether noise suppression is enabled on this participant's microphone.

---

**`echoCancellation`** `boolean` — required

Whether echo cancellation is enabled on this participant's microphone.

---

**`echoCancellation$`** `Observable<boolean | undefined>` — required

Observable of whether echo cancellation is enabled on this participant's microphone.

---

**`handraised`** `boolean` — required

Whether this participant has their hand raised.

---

**`handraised$`** `Observable<boolean | undefined>` — required

Observable of whether this participant has their hand raised.

---

**`id`** `string` — required

Unique participant ID, assigned by the media server.

---

**`inputSensitivity`** `number | undefined` — required

Microphone input sensitivity, or `undefined` if not adjustable.

---

**`inputSensitivity$`** `Observable<number | undefined>` — required

Observable of microphone input sensitivity, or `undefined` if not adjustable.

---

**`inputVolume`** `number | undefined` — required

Microphone input volume, or `undefined` if not adjustable.

---

**`inputVolume$`** `Observable<number | undefined>` — required

Observable of microphone input volume, or `undefined` if not adjustable.

---

**`isAudience`** `boolean` — required

Whether this participant is an audience member rather than an active participant.

---

**`isTalking`** `boolean` — required

Whether the media server currently detects voice activity from this participant.

---

**`isTalking$`** `Observable<boolean | undefined>` — required

Observable of whether the media server currently detects voice activity from this participant.

---

**`lowbitrate`** `boolean` — required

Whether low-bitrate mode is enabled for this participant.

---

**`lowbitrate$`** `Observable<boolean | undefined>` — required

Observable of whether low-bitrate mode is enabled for this participant.

---

**`meta`** `Record<string, unknown> | undefined` — required

Arbitrary metadata bag for this participant, if any.

---

**`meta$`** `Observable<Record<string, unknown> | undefined>` — required

Observable of the call-level metadata bag.

---

**`name`** `string | undefined` — required

Display name of this participant.

---

**`name$`** `Observable<string | undefined>` — required

Observable of display name of this participant.

---

**`nodeId`** `string | undefined` — required

ID of the media node hosting this participant.

---

**`nodeId$`** `Observable<string | undefined>` — required

Observable of the media node ID currently hosting the call.

---

**`noiseSuppression`** `boolean` — required

Whether noise suppression is enabled on this participant's microphone.

---

**`noiseSuppression$`** `Observable<boolean | undefined>` — required

Observable of whether noise suppression is enabled on this participant's microphone.

---

**`outputVolume`** `number | undefined` — required

Speaker output volume for this participant, or `undefined` if not adjustable.

---

**`outputVolume$`** `Observable<number | undefined>` — required

Observable of speaker output volume for this participant, or `undefined` if not adjustable.

---

**`position`** `LayoutLayer | undefined` — required

Current layout position of this participant, or `undefined` if not yet placed. See [`LayoutLayer`](/docs/browser-sdk/v4/reference/interfaces/layout-layer).

---

**`position$`** `Observable<LayoutLayer | undefined>` — required

Observable of current layout position of this participant, or `undefined` if not yet placed. See [`LayoutLayer`](/docs/browser-sdk/v4/reference/interfaces/layout-layer).

---

**`userId`** `string | undefined` — required

User ID associated with this participant, if known.

---

**`userId$`** `Observable<string | undefined>` — required

Observable of user ID associated with this participant, if known.

---

**`target`** `MemberTarget` — required

The member's own RPC target triple. Throws [`ParticipantNotReadyError`](/docs/browser-sdk/v4/reference/errors/participant-not-ready-error) until the member's call context has been received.

---

**`type`** `string | undefined` — required

Participant type (e.g. `member`, `audience`).

---

**`type$`** `Observable<string | undefined>` — required

Observable of participant type (e.g. `member`, `audience`).

---

**`videoMuted`** `boolean` — required

Whether this participant's video is muted.

---

**`videoMuted$`** `Observable<boolean | undefined>` — required

Observable of whether this participant's video is muted.

---

**`visible`** `boolean` — required

Whether this participant is currently visible in the layout.

---

**`visible$`** `Observable<boolean | undefined>` — required

Observable of whether this participant is currently visible in the layout.

---

## **Methods**

### end()

```ts
end(): Promise<void>
```

#### Returns

`Promise<void>`

---

### mute()

```ts
mute(): Promise<void>
```

#### Returns

`Promise<void>`

---

### muteVideo()

```ts
muteVideo(): Promise<void>
```

#### Returns

`Promise<void>`

---

### remove()

```ts
remove(): Promise<void>
```

#### Returns

`Promise<void>`

---

### setAudioInputSensitivity()

```ts
setAudioInputSensitivity(value): Promise<void>
```

#### Parameters

**`value`** `number` — required

New value for the property being set.

---

#### Returns

`Promise<void>`

---

### setAudioInputVolume()

```ts
setAudioInputVolume(value): Promise<void>
```

#### Parameters

**`value`** `number` — required

New value for the property being set.

---

#### Returns

`Promise<void>`

---

### setAudioOutputVolume()

```ts
setAudioOutputVolume(value): Promise<void>
```

#### Parameters

**`value`** `number` — required

New value for the property being set.

---

#### Returns

`Promise<void>`

---

### setMeta()

```ts
setMeta(meta): Promise<void>
```

#### Parameters

**`meta`** `Record<string, unknown>` — required

Arbitrary metadata bag for this participant, if any.

---

#### Returns

`Promise<void>`

---

### setPosition()

```ts
setPosition(value): Promise<void>
```

#### Parameters

**`value`** `VideoPosition` — required

New value for the property being set. See [`VideoPosition`](/docs/browser-sdk/v4/reference/type-aliases/video-position).

---

#### Returns

`Promise<void>`

---

### toggleAudioInputAutoGain()

```ts
toggleAudioInputAutoGain(): Promise<void>
```

#### Returns

`Promise<void>`

---

### toggleDeaf()

```ts
toggleDeaf(): Promise<void>
```

#### Returns

`Promise<void>`

---

### toggleEchoCancellation()

```ts
toggleEchoCancellation(): Promise<void>
```

#### Returns

`Promise<void>`

---

### toggleHandraise()

```ts
toggleHandraise(): Promise<void>
```

#### Returns

`Promise<void>`

---

### toggleLowbitrate()

```ts
toggleLowbitrate(): Promise<void>
```

#### Returns

`Promise<void>`

---

### toggleMute()

```ts
toggleMute(): Promise<void>
```

#### Returns

`Promise<void>`

---

### toggleMuteVideo()

```ts
toggleMuteVideo(): Promise<void>
```

#### Returns

`Promise<void>`

---

### toggleNoiseSuppression()

```ts
toggleNoiseSuppression(): Promise<void>
```

#### Returns

`Promise<void>`

---

### unmute()

```ts
unmute(): Promise<void>
```

#### Returns

`Promise<void>`

---

### unmuteVideo()

```ts
unmuteVideo(): Promise<void>
```

#### Returns

`Promise<void>`

---

### updateMeta()

```ts
updateMeta(meta): Promise<void>
```

#### Parameters

**`meta`** `Record<string, unknown>` — required

Arbitrary metadata bag for this participant, if any.

---

#### Returns

`Promise<void>`

> Base participant interface for call participants Defines the full public contract for participant objects exposed by Call