cyclo. is a collaborative research project by Ikeda and Nicolai, which focuses on the visualisation of sound. The artists are developing a database of sounds that they are composing for the visual responses these produce when analysed in real time using equipment developed originally for phase correlation in mastering vinyl records. With the help and development of such stereo image monitoring equipment, metering has become a visual process. The phase and amplitude of stereo signals can now be illustrated graphically.