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Huron & SNAP Documentation

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Angle Channels<br />

Glossary<br />

Angle channels are utilised by Lake Technology’s simulation applications as channels for<br />

transferring the angle (azimuth, roll, and elevation) of a simulation object.<br />

Auralisation = Auralization:<br />

“Auralization is the process of rendering audible the sound field of a source in a space, in such a way<br />

as to simulate the binaural listening experience at a given position in the modelled space.” [Quoted<br />

from Kleiner, M., Dalenback, B., and Svensson, P. (1993), `Auralization-An Overview,'in Journal of<br />

the Audio Engineering Society, November 1993 , Page 869.]<br />

Auralisation and Acoustic Modelling Software<br />

Auralisation and Acoustic Modelling packages typically take a description of the geometry of the<br />

room (perhaps from a CAD package) and allow the user to specify the acoustic properties of the<br />

surfaces in the room, the properties and directionality of sources and also the properties and<br />

directionality of the listener room with the source and listener in the defined positions.<br />

Azimuth<br />

The angle from an observer to an object on a horizontal plane. Values start at 0.00 for forward and<br />

increase as the object moves towards the left, up to 360.00.<br />

B-Format Decoding<br />

Is the process of decoding B-format signals to a speaker array or headphones.<br />

B-Format Signals<br />

Are signals which are encoded in a three-dimensional audio format. The directionality of a sound<br />

field is represented by a spherical harmonic components, termed X,Y,Z and ω. The fundamental<br />

component is ω which is omnidirectional. X, Y, and Z are the first harmonic figure eight responses<br />

representing forward, left and up.<br />

HURON TECHNICAL MANUAL PAGE 305

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