The PKEY_AudioEndpoint_PhysicalSpeakers property specifies the channel-configuration mask for the audio endpoint device. The mask indicates the physical configuration of a set of speakers and specifies the assignment of channels to speakers. For more information about channel-configuration masks, see the following:

  1. The description of the KSPROPERTY_AUDIO_CHANNEL_CONFIG property in the Windows DDK documentation.
  2. The white paper titled "Audio Driver Support for Home Theater Speaker Configurations" at the Audio Device Technologies for Windows website.

The vt member of the PROPVARIANT structure is set to VT_UI4.

The uintVal member of the PROPVARIANT structure contains a channel-configuration mask that is cast to type UINT.


Requirement Value
Minimum supported client
Windows Vista [desktop apps only]
Minimum supported server
Windows Server 2008 [desktop apps only]

See also

Audio Endpoint Properties

Core Audio Properties