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distance, place mouse cursor to have the following symbol
adjust. In Free Field mode, objects may be displaced with mouse, or preferably with joysticks (see
joystick section).
Except when sources or listener are moving (because of Doppler effect), Free Field mode doesn't
entail sound coloration neither.
Motion Optimized and Space Optimized modes are the most complete simulations, including all
spatial sound attributes in a user-defined acoustic. In these modes, you set the kind of acoustic
atmosphere that suits your show, by defining the room dimensions as well as wall materials. Along
with direct sound, wall reflections are computed, updated and rendered in real-time. Although these
are the most powerful modes in the set, you should remember that sound coloration and artifacts
might occur as for natural sound propagation. Typically, when you position a sound source against a
reflecting wall, the sound heard by the listener is mainly the combination of direct sound and one
reflection slightly delayed – which is a comb filter. Sound coloration occurs in our model because it
occurs in real world too.
Motion Optimized mode is especially suitable if sources are moving a lot and quickly. Space
Optimized, although quite similar, is more focused on acoustic rendering (room acoustic is more
detailed), and might produce slight sound distortion when sources are moving in very reverberant
virtual environments. Experiment and pick the mode that suits better your artistic goal. Use the
reference distance circle to proportion sound objects and balance early reflections and late
reverberation.
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Wrocław Audio Force
displayed, then click and drag to
sources
listener – and reference
distance circle
virtual room walls
18
ORFEUSZ206
user manual
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