The acoustic characteristics of an axisymmetric cone-type loudspeaker mounted in a rigid infinite baffle is calculated by applying the finite element method to the elastic shells (cone, edge, etc.) and the acoustic concavity in front of the shells. Normalized sound-pressure response, directivity function, driving point impedance, vibration behavior of the cone-diaphragm, sound-pressure distribution in the concavity, and near-field and far-field acoustic radiation are presented for discussion. The sound pressure distribution in the concavity and the near-field are clearly visualized by the computer graphics technique. The calculated results are compared with the measured values of the far-field sound-pressure responses and the electrical impedance responses.

Authors: Kyouno, Noboru; Yamabuchi, Tatsuo; Kagawa, Yukio
Affiliations: Mitsubishi Electric Corp., Ofuna, Kamakura, Japan ; Toyama University, Toyama, Japan(See document for exact affiliation information.)
AES Convention: 85 (November 1988) Paper Number: 2700
Publication Date: November 1, 1988
Subject: Microphones and Loudspeakers

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