2022-09-26T08:33:49Zhttps://soar-ir.repo.nii.ac.jp/oaioai:soar-ir.repo.nii.ac.jp:000131782022-07-11T04:37:56Z音響系の電気回路網的特性表現Impedance Matrices Representations of Acoustical Systems安田, 力An attempt has been made to represent the steady state characteristics of an acoustical system having N energy ports (the place through where the acoustical energy goes in or out). The system is regarded as equivalent to an electrical 2N-terminal network. In this case each terminal pair of the network corresponds to the one of the energy ports in the acoustical system. The steady state characteristics of the system are represented in the form of an acoustic impedance matrix which is analogous to an impedance matrix representation of the electrical 2N-terminal network described about. The mathematical treatment is based on the forced vibration solution of the steady state wave equation(Helmholtz equation). The relations between the acoustical impedance matrix and the Green function of the steady wave equation are discussed, and some formulas related to this point are obtained.Article信州大学工学部紀要 7: 201-218 (1957)信州大学工学部1957-11-30jpndepartmental bulletin paperVoRhttp://hdl.handle.net/10091/11023https://soar-ir.repo.nii.ac.jp/records/131780037-3818AN00121228信州大学工学部紀要7201218https://soar-ir.repo.nii.ac.jp/record/13178/files/Engineering07-16.pdfapplication/pdf806.1 kB2015-09-28