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The 3D Billiard display can be used for investigating or demonstrating effects such as scattering from surfaces, flutter echoes, focusing or coupling effects.

A burst of balls are emitted from the source and bounce off the surfaces in the room. The emission of balls can be either 2D or 3D.


Auralisation tools allow predicted acoustics to be presented as it will sound – a priceless tool when acoustic solutions are to be demonstrated to clients. Presentations can be done from within Odeon, in Power Point or on the internet.

Auralisation is based on binaural or ambisonic technology allowing three-dimensional presentation over headphones or through loudspeakers (e.g. in a surround set-up).

A complete orchestra with multiple sources and signals is handled in one calculation.

Listen to auralisation examples at www.odeon.dk.

The OpenGL renders geometry, materials, and source/receiver positions. It is useful when checking the validity of room geometries or the locations of sources and receivers.

A special Odeon feature is the use of acoustic colours in OpenGL to identify the frequence-dependent absorption coefficient of each material.

Point sources can be defined from a directivity pattern, gain, equalisation and a delay, allowing the definition of natural sound sources as well as loudspeaker systems. Loudspeaker data in CLF (Common Loudspeaker Format) can be found at www.CLFgroup.org.

Array sources can be imported from the extensible XML-format or can be created from point sources within the Odeon array source editor giving a nearfield plot, a farfield balloon as well as a direct sound map with frequency responses in a few seconds.

Line sources and surface sources are particularly useful for calculations in industrial environments. The example is a turbine from a power station.

The frequency-dependent Reflection Based Scattering method in Odeon is one of the reasons for excellent agreement with measurement results. The example shows measured and simulated clarity C80 at 500 Hz in the Elmia concert hall (3rd international Round Robin on room acoustic prediction models).

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