COMSOL User Conference Europe from October 14 – 15, 2020 (virtual)

COMSOL User Conference attendees will get first-hand insight into the possibilities of multiphysics modeling and numerical simulation and will have the opportunity to attend a variety of mini-courses to advance their modeling skills.

Mvoid will participate in the event with a presentation on optimization of loudspeakers.
Authors: Alfred J. Svobodnik, Tommaso Nizzoli, F. L. Redl

Conference attendees will be able to enter the Poster, Paper, and Exhibit Hall starting at 8:45 am (CET) on October 14,  directly from the conference dashboard  and view all papers, posters, and prerecorded presentations. Presentations can be filtered by application area and bookmarked to review later.

Throughout the conference, different application areas will be highlighted during specific User Presentation sessions.

The Mvoid presentation is assigned to “Structural Mechanics & Acoustics” on October 15th from 2:30 – 3.30 pm (CET). Mvoid representatives will answer your questions via chat window. 

 

Abstract:

Optimization Of Loudspeakers

Loudspeakers, specifically electrodynamic transducers with enclosures, are used almost everywhere in our life. Transportation of acoustic information is vital for humans since the very beginning of the human evolution. Hence, reproduction of acoustics has a long tradition in engineering sciences. Many of the fundamental inventions are more than 100 years old – the 100th anniversary of the electrodynamic transducer is unclear, but the research paper in 1925 by Chester W. Rice and Edward W. Kellogg at General Electric[1] might be called the birth of the electrodynamic loudspeaker.

Almost 100 years of engineering evolution of loudspeakers also means lots of new ideas, inventions and improvements. Today’s performance parameters of electrodynamic transducers look like a different device than compared to the first prototypes back in 20s of the last century. It is said, that we are now in quite a flat technology curve where huge efforts needs to be invested for relatively small improvements. As a conclusion, we believe that applying mathematical optimization models to improve the performance of electrodynamic transducers might be a chance for another era of revolutionary rather than evolutionary progress in loudspeaker design. This paper will demonstrate the application of optimization procedures to various types of loudspeakers, i.e. sealed and ported ones, to optimize performance targets like smoothness and sensitivity, as well as others.

 

[1] Rice, Chester W. and Edward W. Kellogg, “Notes on the Development of a New Type of Hornless Loudspeaker,” Transactions of the American Institute of Electrical Engineers 44, 1925, p. 461-475

 

Link to Comsol User Conference

 

Picture Source: COMSOL AB, Sweden