The Tanglible interface places the emphasis on the physical movement of real world objects which interact with an audio visual software system. The design of these systems are often orientated towards providing a high level of accessibilty and clearly percievable outcomes from the process of user interaction.
The example here is of particular interest because it demonstrates a clear correllation between the actions of the user, the controller interface and the audio generated response:
The author describes this tool as the following:
The reactable, is a multi-user electronic music instrument with a tabletop tangible user interface. Several simultaneous performers share complete control over the instrument by moving physical objects on a luminous table surface. By moving and relating these objects, representing components of a classic modular synthesizer, users can create complex and dynamic sonic topologies, with generators, filters and modulators, in a kind of tangible modular synthesizer or graspable flow-controlled programming language.
This instrument is being developed by a team of digital luthiers (Sergi Jordà, Martin Kaltenbrunner, Günter Geiger and Marcos Alonso), at the Music Technology Group within the Universitat Pompeu Fabra in Barcelona, Spain.