# OTSubscriberKitAudioLevelDelegate Protocol Reference

Conforms to | NSObject
Declared in | OTSubscriberKit.h

## Overview

Used for monitoring the audio levels of the subscriber.

### `– subscriber:audioLevelUpdated:` required method

Sent on a regular interval with the recent representative audio level.

`- (void)subscriber:(nonnull OTSubscriberKit *)subscriber audioLevelUpdated:(float)audioLevel`

#### Parameters

`subscriber` | The subscriber instance being represented.
`audioLevel` | A value between 0 and 1, representing the audio level. Adjust this value logarithmically for use in a user interface visualization of the volume (such as a volume meter).

#### Declared In

`OTSubscriberKit.h`