# OTPublisherKitAudioLevelDelegate Protocol Reference

Conforms to | NSObject
Declared in | OTPublisherKit.h

## Overview

Used for monitoring the audio levels of the publisher.

### `– publisher:audioLevelUpdated:` required method

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

`- (void)publisher:(nonnull OTPublisherKit *)publisher audioLevelUpdated:(float)audioLevel`

#### Parameters

`publisher` | The publisher 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

`OTPublisherKit.h`