The 2024 Loudspeaker Industry Sourcebook (LIS) Edition is Now Available!

The 2024 edition of the Loudspeaker Industry Sourcebook (LIS) refreshes the renowned annual industry supply chain reference publication and includes a valuable overview of the State of the Speaker Industry, including some of the speaker designs that stand out in past months. The 2024 edition also offers a series of must-read Industry Features, celebrates industry milestones, and includes our traditional questions and answers with a select audio industry panel.

This article by René Christensen (BSEE, MSc, PhD), offers a valuable tutorial that discusses the unique possibilities of three-dimensional analysis of loudspeaker driver displacement, using Phase Decomposition and Axial-Symmetrical Decomposition techniques. The article demonstrates how a total displacement on a cone surface can be decomposed into different components directly in COMSOL Multiphysics, and how this can reveal some of the underlying mechanisms of the driver.

The SonicEdge transducer - a cutting-edge microspeaker based on a unique MEMS technology that generates sound using active ultrasound modulation - introduces a completely new class of devices that can deliver constant volume velocity across audio frequencies and beyond. The article details how to model the transducer in lumped-element and finite-element acoustic simulations and how to tailor a desired SPL response using acoustic features. As originally published in audioXpress, August 2023.