#Intel sigmatel audio drivers

Implementations of the host controller are available from at least Intel, Nvidia, and AMD. Like AC'97, HD Audio is a specification that defines the architecture, link frame format, and programming interfaces used by the controller on the PCI bus and by the codec on the other side of the link. Linux also supports HD Audio controllers, as do the OpenSolaris, FreeBSD, NetBSD and OpenBSD operating systems. macOS has full support with its AppleHDA driver.

#Intel sigmatel audio drivers

There are UAA drivers for Windows 2000 and Windows XP SP2 as well. Windows XP SP3 and later Windows versions include a Universal Audio Architecture (UAA) class driver which supports audio devices built to the HD Audio specification. Users requiring more audio I/Os will typically opt for a sound card or an external audio interface, as these devices also provide additional features that are more oriented towards professional audio applications. Motherboards typically do not have any more than eight onboard output channels (7.1 surround sound) and four input channels (back and front panel microphone inputs, and a back-panel stereo line-in). However, as of 2008, most audio hardware manufacturers did not implement the full specification, especially 32-bit sampling resolution.

Audio jack detection, sensing, and retasking.Support for audio codecs (e.g., ADC, DAC), modem codecs, and vendor-defined codecs.The Intel High Definition Audio specification includes the following features: