The version of the HD Audio bus driver that runs on Windows Server 2003 and Windows XP supports three variants of the HD Audio DDI:Ī DDI that is defined by the HDAUDIO_BUS_INTERFACE structure. The HD Audio bus driver exposes the HD Audio DDI to its children, which are instances of the audio and modem drivers that manage the codecs. The HD Audio bus driver implements the HD Audio device driver interface (DDI), which kernel-mode audio and modem drivers use to communicate with hardware codecs that are attached to the HD Audio controller. For an overview of Microsoft's UAA, see the white paper Universal Audio Architecture website. For information about the HD Audio controller architecture, see the Intel High Definition Audio Specification at the Intel HD Audio website.

Microsoft also will develop a similar HD Audio bus driver and UAA HD Audio class driver for systems that run Windows Server 2003, and Windows XP.

In Windows Vista, Microsoft will provide the following two drivers as part of the operating system:Ī bus driver for managing an Intel High Definition Audio (HD Audio) bus interface controller.Ī Universal Audio Architecture (UAA) class driver for managing a UAA-compliant audio codec (or possibly more than one codec) that is connected to an HD Audio controller.

Amd high definition audio drivers