kAudioSessionProperty_OtherMixableAudioShouldDuck

For audio session categories that allow audio mixing with other apps, specifies whether other audio should be reduced in level when your app produces sound. This property has a value of FALSE (0) by default. Set it to a nonzero value to turn on ducking.

var kAudioSessionProperty_OtherMixableAudioShouldDuck: Int { get }