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3D audio as an information-environment: manipulating perceptual significance for differntiation and pre-selectionContemporary use of sound as artificial information display is rudimentary, with little 'depth of significance' to facilitate users' selective attention. We believe that this is due to conceptual neglect of 'context' or perceptual background information. This paper describes a systematic approach to developing 3D audio information environments that utilise known cognitive characteristics, in order to promote rapidity and ease of use. The key concepts are perceptual space, perceptual significance, ambience labelling information and cartoonification.