Windows 7 Audio Logo Changes November 13, 2009



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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this paper and the WLK or LogoPoint, consider the WLK and LogoPoint to be factually correct and this paper to be out of date.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.
This White Paper is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS DOCUMENT.
Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of Microsoft Corporation.
Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property.
Unless otherwise noted, the example companies, organizations, products, domain names, e-mail addresses, logos, people, places and events depicted herein are fictitious, and no association with any real company, organization, product, domain name, email address, logo, person, place or event is intended or should be inferred.
© 2009 Microsoft Corporation. All rights reserved.
Microsoft, Windows, and Windows Vista are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

Document History



Date

Change










November 13, 2009

First publication

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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