1. A system for selecting an object from a plurality of objects in a physical environment, the system comprising: a plurality of acoustic sensors; a sound analysis subsystem configured to analyze acoustic data received by the plurality of acoustic sensors, the sound analysis subsystem further configured to detect a snapping sound, determine the relative direction of the snapping sound, and estimate the distance to an object based on loudness measurements of the snapping sound detected in the acoustic data; and an object location subsystem configured to determine the location of the object relative to the system based at least in part on the determined direction, the estimated distance to the object and a location of the system.