Shell ixi-software Shell is composed by two pieces of software. An interface and a sound engine created using Pure Data (Pure Data by Miller Puckette and others, http://www.crca.ucsd.edu/~msp/software.html ). It also uses some externals for Pure Data (By different authors).
The interface is connected to the sound engine allowing to control transformations applied to different samples by manipulating the shape and location of different polygons in the interface.