User guide
40 Chapter 4: Audio Center
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DS3D GX and DSP Modes
Essence STX II introduces an innovative technology – DirectSound 3D Game Extensions v1.0 (DS3D
GX 1.0)- to restore DirectSound 3D Hardware acceleration mode and its subsidiary EAX eects
on Windows® Vista for 3D games. Unlike some proprietary API like OpenAL, DS3D GX does not
require games to support OpenAL API. All existing games compatible with Microsoft DirectX and
DirectSound 2D/3D are supported with DS3D GX technology. Before you start EAX and DS3D HW
games, enable DS3D GX on the Xonar Audio Center, and disable the feature after playing.
Supports latest DS3D GX 2.0 for gaming on Windows® Vista and Windows® XP
DS3D GX 2.0 not only revives EAX and DirectSound HW eects, but also allows you to run EAX
HD 5.0 games on both Windows® XP and Vista. It provides the best compatibility with existing
DirectX games. GX2.0 also adds innovative VocalFX voice eects for existing EAX games or VOIP
applications. Besides the abundant sound eects described above, the Essence STX II also provides
quick Digital Sound Processing modes that are congured for typical applications including Music,
Movies, and Games over dierent output speaker types. In addition, Essence STX II also oers a Hi-Fi
mode for hi-delity playback without any eect processing to keep the original audio delity. Every
time you turn on Hi-Fi mode, Xonar HDAV 1 clears all sound eects. Use Hi-Fi mode for audio quality
tests (using RMAA software or another machine-based measurement). Use the DSP mode button as
the quick setup if you do not wish to know the details of the eect setup.
No sound eects are applied to high-denition 96KHz/192KHz content.