How to gain an overview using sound?

While at the Aalto University working with Kai Puolamaki and his team we looked at how a user can obtain an overview of items in an augmented reality scene. We focused on using sound only and derived some guidelines that may help designers to chose the best types of sounds, reproduction method, and onset intervals. This is a demo of the experimental design and the sounds we used: This work has been published in ACM Transactions on Applied Perception (2013).