London Philharmonic Orchestra. The system has now been made available for free by the

www.goldsmiths.ac.uk/ems This paper describes the technical and aesthetic approach utilised for the development of an interactive audiovisual performance system designed specifically for use by children with multiple learning difficulties, including deafness and autism. Sound is transformed in real-time through the implementation of a Fast Fourier Transform (FFT) and translated into a moving image. This image is adapted so that relevant information can be understood and manipulated visually in real-time. Finally, the image is turned back into sound with only minimal delay. The translation process is based on research in computer music, neuroscience, perception an