Type Property


The category for playing recorded music or other sounds that are central to the successful use of your app.


static let playback: AVAudioSession.Category


When using this category, your app audio continues with the Silent switch set to silent or when the screen locks. (The switch is called the Ring/Silent switch on iPhone.) To continue playing audio when your app transitions to the background (for example, when the screen locks), add the audio value to the UIBackgroundModes key in your information property list file.

By default, using this category implies that your app’s audio is nonmixable—activating your session will interrupt any other audio sessions which are also nonmixable. To allow mixing for this category, use the mixWithOthers option.

See Also

Audio Session Categories

static let ambient: AVAudioSession.Category

The category for an app in which sound playback is nonprimary—that is, your app also works with the sound turned off.

static let multiRoute: AVAudioSession.Category

The category for routing distinct streams of audio data to different output devices at the same time.

static let playAndRecord: AVAudioSession.Category

The category for recording (input) and playback (output) of audio, such as for a Voice over Internet Protocol (VoIP) app.

static let record: AVAudioSession.Category

The category for recording audio; this category silences playback audio.

static let soloAmbient: AVAudioSession.Category

The default audio session category.

static let audioProcessing: AVAudioSession.Category

The category for using an audio hardware codec or signal processor while not playing or recording audio.