ALFIO (Acoustic Load From Impedance Observation) is a method to determine the acoustic load added by an enclosure to a loudspeaker driver, by fitting the parameters of an equivalent circuit model. This is achieved by measuring the electrical input impedance of the driver in free-air and in the enclosure. The procedure is explained and demonstrated through measurements on several real systems. The evaluation of uncertainties allows model improving through the addition of a further parameter. The whole procedure is implemented in a MATLAB app.

Authors: Magalotti, Roberto; Bugaj, Karol; Said, Ahmed
Affiliations: Bowers & Wilkins, UK; Bowers & Wilkins, UK; Politecnico di Milano, Italy(See document for exact affiliation information.)
AES Conference: AES 2024 International Conference on Acoustics & Sound Reinforcement (January 2024)
Paper Number: 20
Publication Date: January 23, 2024
Subject: Acoustics & Sound Reinforcment

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