# cast.[framework](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework).[messages](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework.messages).AudioTrackInfo

class static

Describes audio track information for an audio track.

## Constructor

### AudioTrackInfo

new
AudioTrackInfo()

## Properties

### audioCodec

(string or undefined)

This represents the codec of the audio track.

### numAudioChannels

(number or undefined)

The number of audio track channels.

### spatialAudio

(boolean or undefined)

True indicates this track content has spatial audio. Determined by
signals from the manifest.