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Determination of Loudspeaker Parameters Using a System Identification Technique

To measure the parameters, the loudspeaker driver is excited by a low-pass filtered step or square-wave voltage input. From recordings of the voltage and the corresponding current and coil velocity by a micro computer, a linear discrete time model of the loudspeaker is determined, using the prediction error system identification method. Application of the described method on a number of loudspeakers indicate that it is both fast and accurate.

Authors: Knudsen, Morten H.; Rubak, Per
Affiliation: Institute of Electronic Systems, Aalborg University, Aalborg, Denmark
AES Convention:82 (March 1987) Paper Number:2445 Import into BibTeX
Subject:Loudspeakers

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