Windows 7 Audio Logo Changes
November 13, 2009
Abstract
The Windows® 7 Logo Program is designed to help third-party vendors deliver compatible and reliable systems, software, and hardware products. End users trust the logo as an assurance of compatibility and reliability.
This paper highlights changes to Windows 7 Audio Logo requirements and tests that impact driver and hardware implementations. It is a convenient reference for these changes and does not duplicate the official logo requirement publications. Audio hardware, system, device, and driver developers and testers should read this paper in the earliest stages of design to ensure that your audio solution works well on Windows 7.
This information applies to the Windows 7 operating system.
References and resources discussed here are listed at the end of this paper.
For the latest information, see:
http://www.microsoft.com/whdc/device/audio/Win7Logo_Aud.mspx
The presented information might eventually be provided in the Windows Logo Kit (WLK) and LogoPoint. If you encounter a conflict between this paper and the WLK or LogoPoint, consider the WLK and LogoPoint to be factually correct and this paper to be out of date.
For further information, contact:
uaa@microsoft.com
Disclaimer:
The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information presented after the date of publication.
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Document History
Contents
Introduction 3
New Audio Device Types, Standards, and Logo Programs for Windows 7 3
High-Definition Multimedia Interface (HDMI) 3
HD Audio Low-Power DCN 5
Bluetooth Audio Devices and Drivers 6
Communication Device Logo Program 9
Updates on Existing Requirements 14
WaveRT Event-Driven Mode Support 14
Improved Audio Fidelity Coverage 16
Capture Test 17
System Activity Test 18
Skew Test for Sampling Frequency Accuracy 19
Power State Transition Test for Catching Pops and Clicks 19
Full Duplex Requirement: Round Trip 20
HD Audio PNP ID Requirement Change 23
Resources 24
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