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Convention Paper

Measurement of Loudspeaker Parameters Using a Laser Velocity Transducer and Two-Channel FFT Analysis

Authors: Moreno, Jorge N.

AES Convention 88 · Paper 2891 · March 1990

Abstract

A simple method to measure the low frequency parameters of loudspeakers is presented. In this method, no auxiliary known compliance or known mass is needed. Random noise is used to excite the loudspeaker. Three parameters have to be measured in order to perform the calculation, input voltage, input current and diaphragm velocity. As an application, the Thiele and Small parameters of two loudspeakers are measured. This method could be used to measure mid range and high frequency drivers.

Details

Published in
AES Convention 88
AES Convention
88
Paper number
2891
Publication date
March 6, 1990
Session subject
Systems and Measurements
Affiliation
Bruel & Kjaer, Naerum, Denmark (See document for exact affiliation information.)
Type
Convention Paper