This class represents a multi-zone soundfield using orthogonal basis expansion for reproduction by any single zone reproduction technique. This class was implemented based on the publication: JIN, W., KLEIJN, W. B. & VIRETTE, D. Multizone soundfield reproduction using orthogonal basis expansion. Acoustics, Speech and Signal Processing (ICASSP), 2013 IEEE International Conference on, 2013. IEEE, 311-315. A Patent exists that closely resembles this classes methods, please read carefully: W. Jin, W. B. Kleijn, and D. Virette, “Audio rendering system,” WO2014082683 A1, 05-Jun-2014. Author: Jacob Donley, University of Wollongong, Australia Email: Jacob.Donley089@uowmail.edu.au