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Comparison of Numerical Simulation Models and Measured Low-Frequency Behavior of Loudspeaker Enclosures

The vibroacoustic behavior of a set of prototype loudspeakers below 1 kHz was studied in detail by comparing measurements and element model simulations. Sound fields were measured using a microphone array of electret capsules designed for the purpose and vibrations using a laser vibrometer and accelerometers. Simulations were carried out using analytical, finite- and boundary-element methods, and finite-difference methods. The enclosure conditions were varied from a fixed wall case buried in sand to a free-standing empty box and a freestanding damped box. The applicability of each modeling technique is discussed.

Authors: Karjalainen, Matti; Ikonen, Veijo; Antsalo, Poju; Maijala, Panu; Savioja, Lauri; Suutala, Antti; Pohjolainen, Seppo
Affiliations: Helsinki University of Technology, Laboratory of Acoustics and Audio Signal Processing, Espoo, Finland ; Tampere University of Technology, Department of Mathematics, Tampere, Finland ; VT T Automation, Machinery Acoustics, Tampere, Finland(See document for exact affiliation information.)
JAES Volume 49 Issue 12 pp. 1148-1166; December 2001 Import into BibTeX

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