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(June 1999) 3Dxp ™ DirectSound 3.0 Extension API – 3D Audio Working Group
12 Oct 2023This document was prepared by a group of 3D hardware and software vendors meeting as the 3D
Audio Working Group (3DWG) of the Interactive Audio Special Interest Group (IASIG) of the
MIDI Manufacturers Association.
It is intended as an alternative for developers who wish to extend or accelerate the functionality of Microsoft’s DirectSound 3.0 API (for Windows applications) in a standard fashion prior to the
release of a Microsoft solution, a desire which is supported by members of the 3DWG. This
recommendation is not endorsed by Microsoft.
The 3DWG has also prepared guidelines – specifically a “Level 1” and a “Level 2” document –
which define more fully the functions and parameters which the WG believe are most appropriate for accurate 3D object and environment modeling, and are not OS or API specific.
These guidelines should help move the entire PC industry in a common direction, towards greater quality and superior performance, and more realistic multimedia applications.
3Dxp is a trademark of MIDI Manufacturers Association Incorporated. All other trademarks are
property of their holders.
IASIG documents are for informational purposes only. The IASIG does not make any representation or warranty regarding specifications in these documents or any product or item developed based on these specifications. The IASIG disclaims all express and implied warranties, including but not limited to the implied warranties or merchantability, fitness for a particular purpose and freedom from infringement. All information provided in these documents has been made public by the individual company participants and is believed to be free of patents or pending patent applications, trademarks, copyrights, or other intellectual property rights, other than those of the IASIG and/or the MIDI Manufacturers Association by virtue of having produced these documents. The furnishing of these document does not give you any license to the patents, trademarks, copyrights, or other intellectual property rights expressed or implied herein. Without limiting the generality of the foregoing, the IASIG does not make any warranty of any kind that any item developed based on these specifications or recommendations, or any portion thereof, will not infringe any copyright, patent, trade secret or other intellectual property right of any person or entity in any country. The IASIG shall not be liable for any damages arising out of or in connection with the use of these specifications or recommendations, including liability for lost profit, business interruption, or any other damages whatsoever.3Dxp_DirectSound3.0_Ext_API
Copyright 1997 MIDI Manufacturers Association Incorporated
ALL RIGHTS RESERVED. NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY FORM OR BY ANY MEANS,
ELECTRONIC OR MECHANICAL, INCLUDING INFORMATION STORAGE AND RETRIEVAL SYSTEMS, WITHOUT
PERMISSION IN WRITING FROM THE MIDI MANUFACTURERS ASSOCIATION.
MMA
POB 3173
La Habra CA 90632-3173
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