| Microsoft DirectX 8.1 (C++) | 
The following GUIDs are used to identify default playback and capture devices.
| Device ID | Description | 
| DSDEVID_DefaultPlayback | System-wide default audio playback device. | 
| DSDEVID_DefaultCapture | System-wide default audio capture device. | 
| DSDEVID_DefaultVoicePlayback | Default voice playback device. | 
| DSDEVID_DefaultVoiceCapture | Default voice capture device. | 
See Also