<!--
{
  "documentType" : "article",
  "framework" : "CoreAudio",
  "identifier" : "/documentation/CoreAudio/1494541-anonymous",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "Anonymous"
}
-->

# Anonymous

## Topics

### Constants

[`var kAudioStreamPropertyAvailablePhysicalFormats: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyAvailablePhysicalFormats)

[`var kAudioStreamPropertyAvailableVirtualFormats: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyAvailableVirtualFormats)

[`var kAudioStreamPropertyDirection: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyDirection)

[`var kAudioStreamPropertyIsActive: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyIsActive)

[`var kAudioStreamPropertyLatency: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyLatency)

[`var kAudioStreamPropertyPhysicalFormat: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyPhysicalFormat)

[`var kAudioStreamPropertyStartingChannel: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyStartingChannel)

[`var kAudioStreamPropertyTerminalType: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyTerminalType)

[`var kAudioStreamPropertyVirtualFormat: AudioObjectPropertySelector`](/documentation/CoreAudio/kAudioStreamPropertyVirtualFormat)



---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)