Objects (PSOs) is an experimental project, originaly
developed at the Music Technology Group (MTG) of the Pompeu Fabra University
and continued since 2006 at the Research Centr for Science and Technology of the Arts (CITAR) at the Catholic University.
It addresses the topic Internet based Collaborative Virtual Environments
focused on sonic arts and music creation.
The overall system
architecture is designed along the following key aspects:
It is a public event with special characteristics that should be appealing
both to a "real world" live audience and to a virtual audience
of occasional on-line users visiting the server;
The Main Application in the Server Side is a Synthesis Engine currently implemented with PD (Pure Data). On the client side an early prototype implementation of a Bouncing Ball Skin   was developed using Macromedia Flash and the current version was ported to Java.
A Commission from Casa da Música in 2007, took the project towards a new dimension leading to an installation of the system with significant improvements at the user interface and physical structures of the terminals.The original installation included several PSO's user terminals dispersed at the Casa da Musica hallways, which allowed users to interactively share and create a soundscape generated by a Yamaha Disklavier Piano controlled by a central server. The installation was open since 2007 and is now permanently installed at casa da Musica 's "Foyer Renascimento".