kAudioStreamPropertyIsActive Declarationvar kAudioStreamPropertyIsActive: AudioObjectPropertySelector { get } See AlsoConstantskAudioStreamPropertyAvailablePhysicalFormatskAudioStreamPropertyAvailableVirtualFormatskAudioStreamPropertyDirectionkAudioStreamPropertyLatencykAudioStreamPropertyPhysicalFormatkAudioStreamPropertyStartingChannelkAudioStreamPropertyTerminalTypekAudioStreamPropertyVirtualFormat