Important Microsoft has released version 1.0a of the Universal Audio Architecture (UAA) High Definition Audio class driver for Microsoft Windows. The newer release supports the High Definition Audio and modem implementations that are known to Microsoft as of August 1, 2004. This is the second version of this driver and supersedes this hotfix. We recommend that you install version 1.0a of this driver. For more information about version 1.0a of this driver and about how to obtain it, click the following article number to view the article in the Microsoft Knowledge Base:
888111 Universal Audio Architecture (UAA) High Definition Audio class driver version 1.0a available for Windows XP, Windows Server 2003, and Windows 2000
This article describes the first release of the Universal Audio Architecture (UAA) High Definition Audio class driver for Microsoft Windows. This driver is designed to work with the following versions of Windows:
Microsoft Windows Server 2003
Microsoft Windows XP Service Pack 1 (SP1)
Microsoft Windows 2000 Service Pack 4 (SP4)
This release supports the High Definition Audio and modem implementations that are known to Microsoft as of March 19, 2004. The package will not work on High Definition Audio implementations that are disclosed to Microsoft after this date.
A supported feature that modifies the default behavior of the product is available from Microsoft. However, this feature is intended to modify only the behavior that this article describes. Apply this feature only to systems that specifically require it. This feature might receive additional testing. Therefore, if the system is not severely affected by the lack of this feature, we recommend that you wait for the next software update that contains this feature.
If the feature is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the feature.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific feature. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Note The "Hotfix download available" form displays the languages for which the feature is available. If you do not see your language, it is because the feature is not available for that language.
To apply this update, you must have one of the following versions of Windows installed on your computer:
Microsoft Windows Server 2003
Microsoft Windows XP with Service Pack 1 (SP1)
Microsoft Windows 2000 with Service Pack 4 (SP4)
You may have to restart your computer after you apply this update.
The English version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
The new UAA describes a class driver architecture for computer audio solutions that are supported in Microsoft Windows operating systems.
An audio device that is UAA compliant can rely completely on the operating system for driver support. Therefore, the hardware vendor does not have to supply a custom driver for the device. Microsoft plans to supply UAA class drivers for the following classes of audio device in Windows Server 2008.
IEEE 1394 AV/C
High Definition Audio
A High Definition Audio device complies with the Intel High Definition Audio specification. A High Definition Audio device connects to the PCI bus or to the PCI Express bus. This High Definition Audio device can reside on an internal audio card, or it can be part of an integrated motherboard chip set. The update that is described in this article supports the spring 2004 Intel initial hardware release of High Definition Audio-compliant solutions.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
The advantages of UAA over the current audio industry solution, AC’97 Audio Codec, include the following.
Simpler installation of audio peripherals
Increased system stability
Easier installation of audio drivers
Increased security for protected content
Reduced requirement for vendor-supplied drivers
Reduced requirement to upgrade drivers
Guaranteed basic audio support for UAA-compliant devices
For OEMs and hardware manufacturers
Reduced software development, testing, and support
Reduced exposure to product support calls and to product returns
Easier phase-out for products at "end of life"
For more information about the UAA in Microsoft Windows, download the Universal Audio Architecture white paper. To do this, visit the following Microsoft Web site:
Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.