We present the evaluation of an interactive audio map system that enables blind and partially sighted users to explore and navigate city maps from the safety of their home using 3D audio and synthetic speech alone. We begin with a review of existing literature in the areas of spatial knowledge and wayfinding, auditory displays, and auditory map systems, before describing how this research builds on and differentiates itself from this body of work. One key requirement was the ability to quantify the effectiveness of the audio map, so we describe the design and implementation of the evaluation, which took the form of a game downloaded by participants to their own computers. The results demonstrate that participants (blind, partially sighted and sighted) have acquired detailed spatial knowledge and also that the availability of 3D audio cues significantly improves wayfinding performance.

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