This report presents a review of the technology for which the Author intends to develop a digital simulation. The technology being treated is the original Leslie rotary loudspeaker. The Leslie rotary loudspeaker is an analogue electromechanical system utilizing rotating sound sources to modify sound which is passed through it. Included in this report is a consideration of prior art in digital simulation of the Leslie rotary loudspeaker and recommendations for further development thereof. The intended digital simulation platform for further development is functional script for the Matlab R2011b environment.Architecture & Allied Art