By measuring the ratio of the nearfield pressure to diaphragm acceleration of a loudspeaker when it is mounted on a large enough baffle, the effective radiating surface area of the diaphragm can be calculated. This method, which is based on simplified expressions of the nearfield pressure generated by a flat piston, can be applied in the low frequency range as long as there are no resonances excited. In order to verify the theoretical calculations, pistons of different shapes as well as loudspeakers were measured. Results obtained using different methods are presented in this paper.
https://www.aes.org/e-lib/browse.cfm?elib=6371
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.
Learn more about the AES E-Library
Start a discussion about this paper!