A simple model is proposed to account for the effects of cabinet edge diffraction on the radiated sound field for direct-radiating loudspeaker components when mounted in an enclosure. The proposed approach is termed the distributed edge dipole (DED) model since it is developed based on the Kirchhoff approximation using distributed dipoles with their axes perpendicular to the baffle edge as the elementary diffractive sources. The DED model is first tested against measurements for a thin circular baffle and then applied to a real-world loudspeaker that has a thick, rectangular baffle. The forward sound pressure level and the entire angular domain are investigated, and predictions of the DED model show good agreement with experimental measurements.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.