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Loudspeaker cabinets should not contribute at all to the total sound radiation but aim instead to be a perfectly rigid box that encloses the drive units. To achieve this goal, state of the art FEM software packages and Doppler vibro-meters are the tools at our disposal. The modeling steps covered in the paper are: measuring and fitting orthotropic material properties, including damping; 3D mechanical modeling with a curvilinear coordinates system and thin elastic layers to represent glue joints; scanning laser Doppler measurements and single point vibration measurements with an accelerometer. Additionally a numerically efficient post-processing approach used to extract the total radiated acoustic power and an example of what kind of improvement can be expected from a typical design optimization are presented.
Author (s): Cobianchi, Mattia; Rousseau, Martial
Affiliation:
B&W Group Ltd., West Sussex, UK
(See document for exact affiliation information.)
AES Convention: 139
Paper Number:9367
Publication Date:
2015-10-06
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Session subject:
Transducers/Perception
Permalink: https://aes2.org/publications/elibrary-page/?id=17925
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Cobianchi, Mattia; Rousseau, Martial; 2015; Predicting the Acoustic Power Radiation from Loudspeaker Cabinets: A Numerically Efficient Approach [PDF]; B&W Group Ltd., West Sussex, UK; Paper 9367; Available from: https://aes2.org/publications/elibrary-page/?id=17925
Cobianchi, Mattia; Rousseau, Martial; Predicting the Acoustic Power Radiation from Loudspeaker Cabinets: A Numerically Efficient Approach [PDF]; B&W Group Ltd., West Sussex, UK; Paper 9367; 2015 Available: https://aes2.org/publications/elibrary-page/?id=17925
@article{cobianchi2015predicting,
author={cobianchi mattia and rousseau martial},
journal={journal of the audio engineering society},
title={predicting the acoustic power radiation from loudspeaker cabinets: a numerically efficient approach},
year={2015},
number={9367},
month={october},}