@conference{ando1993the, title = {The Calculation of Directivity of a Loudspeaker System under Various Conditions by Using a Boundary-Element Method: Case of Multiloudspeaker System for Free Space}, author = {Ando, Fumihiro and Satoh, Katsuaki and Taguchi, Azuma}, booktitle = {Audio Engineering Society Convention 95}, month = {Oct}, year = {1993}, url = {https://www.aes.org/e-lib/browse.cfm?elib=6481} }