SoundXY approaches real-time individual auditory feedback through stereo spatialization in a tangible tabletop system for music performance. Its primary purpose is to solve a known problem in multi-user interactive tabletops: how real-time feedback can improve participants’ awareness of who is working on what task during parallel interactions. The audio engine and program logic was built with SuperCollider using the SETO Quark. A collection of varied sounds was represented by tangible objects. The object tracking was processed using reacTIVision, based on fiducial markers. The sounds ranged from basic sounds (e.g. noise waves, sine waves) to sound samples from Freesound.org. Stereo spatialization was applied to allow listeners to localise the sounds depending on the position of the tangibles on the tabletop surface. The SoundXY code is publicly available at: http://github.com/axambo/soundxy2
