The following figure shows the configuration of WDM audio components that render and capture wave content.

Rendering and Capturing Wave Content
See the following for a description of the WDM audio components:
Port Class Adapter Driver and PortCls System Driver
See the following for more information about the configuration of the port class adapter driver and the USBAudio driver:
Rendering and Capturing Audio Content by Using a Port Class Audio Adapter
Rendering and Capturing Audio Content by Using the USBAudio Driver