The following figure shows a configuration of a port class audio adapter driver that renders and captures audio content.

Rendering and Capturing Audio Content by Using a Port Class Audio Adapter Driver
See the following for a description of the WDM audio components:
Port Class Adapter Driver and PortCls System Driver
See the following for information about wave, MIDI, DirectMusic, and topology filters:
See the following for more detail about the filter graphs above the port class audio adapter: