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Convention Paper

Measurement of the Effective Radiating Surface Area of a Loudspeaker Using a Laser Velocity Transducer and a Microphone

Authors: Moreno, Jorge N.; Moscoso, Richard A.; Jonsson, Søren

AES Convention 96 · Paper 3861 · February 1994

Abstract

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.

Details

Published in
AES Convention 96
AES Convention
96
Paper number
3861
Publication date
February 6, 1994
Session subject
Transducers
Affiliation
Pontificia Universidad Cat61ica del Peril, Laboratorio de Acfistica, Lima, Peru ; Brfiel & Kjaer, Naerum, Denmark (See document for exact affiliation information.)
Type
Convention Paper