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Convention Paper

Measurements of Loudspeaker Parameters Using a Laser Velocity Transducer-An Improved Method

Authors: Moreno, Jorge N.; Bøg, Henning

AES Convention 91 · Paper 3163 · October 1991

Abstract

An improved laser-based method for measuring the parameters of a loudspeaker is presented. In this method, besides the fact that no auxiliary known compliance or known mass is needed, the influence of the inductance of the voice coil is almost completely removed from the measured data by means of post-processing in an audio analyzer. Low frequency units as well as mid-range and high frequency units can be measured as long as they comply with the loudspeaker equivalent circuit on which this paper is based. Measurements done on loudspeakers in free air and by the traditional method using a closed enclosure are discussed.

Details

Published in
AES Convention 91
AES Convention
91
Paper number
3163
Publication date
October 6, 1991
Session subject
Measurements
Affiliation
Briiel & Kjaer, Naerum DK-2850, Denmark (See document for exact affiliation information.)
Type
Convention Paper