Aztech PCI288-Q3D II, User Manual

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Appendix D — QEM™
D.1 What is QEM™?
QEM™ stands for QSound
®
Environmental Modeling™, a sound rendering
technology that produces reverberation and other special audio effects. QEM™
is compatible with the EAX™1.0 API (application programming interface) from
Creative Labs which means that any game written to take advantage of EAX™
will also work with your sound card.
D.2 What does QEM™ do?
In real life, every room, or “environment” you enter has some sort of reverberant
quality , depending on different factors like its size , and the material the surrounding
objects (e.g. walls, mountains, etc.) are made of.
QEM™ attempts to model this in a game world, by applying environment effects
to DirectSound™ audio streams, by way of presets that can be either set manually,
or called automatically from within an “ EAX™-enabled ” program. (See Figure 1)
QEM™
(QSound Labs, Inc.)
Figure 1: How QEM™ Works
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