Simulations for acoustic horns have been developed using Finite Element Analysis (FEA) in both ANSYS and COMSOL modelling software. The FEA method solves the ideal, linear wave equation, so the effects of non-linearity and viscosity are not inherently simulated. Quarter models were used in each case as the acoustic horns were not axi-symmetric. The size and shape of the horns have been informed by longstanding design parameters. The simulation results have been compared with acoustic measurements, and discrepancies investigated. While it was found that beam angle (dispersion) characteristics were relatively robust, it was useful in both cases to improve the accuracy of the beam angle, SPL, and impedance simulations by the application of frequency dependent damping to models of the compression driver.
Authors:
Murphy, David J.; Morgans, Rick
Affiliations:
Krix Loudspeakers, Hackham, SA, Australia; Cyclopic Energy, Adelaide, SA, Australia(See document for exact affiliation information.)
AES Convention:
128 (May 2010)
Paper Number:
8076
Publication Date:
May 1, 2010
Subject:
Loudspeakers and Headphones
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.