Dear Sir, A European Patent Application of my invention the "Irregular Heptagonal Polyhedron" has been published some months ago in Munich Germany. My invention involves Architectural Acoustic design for modular recording studios for live music. This novel invention has attractive and innovating conditions to achieve true acoustic recording. Its structure is the result of some geometry operations starting from the heptagon. In would like to put into your consideration the EPO patent document of my invention (Abstract, Description, Drawings and Claims) to eventually consider the possibility to publish it in your magazine. Thanks, Abdullah Arellano