All items tagged with COMSOL (85)

Design, Simulations, and Measurements in Voice Coil December 2024

November 27, 2024 by audioXpress Staff

Design, Simulations, and Measurements in Voice Coil December 2024

In this December 2024 issue there's a new DSP product review of the Marani Pro Audio MIR260A outboard processor, and Lars Risbo shares his expertise in Numerical Optimization applied to Speaker Box Alignments. Essential resources are the updated directories of Test and Measurement and of Simulation and CAD Software vendors. On Test Bench, Vance Dickason characterizes the Faital Pro HF110 1" Neodymium Motor Compression Driver and the SB Acoustics Satori MR16TX-8 6.5" TPCD Midrange.

Simulation Techniques: Double Bass Arrays

November 21, 2024 by René Christensen

Simulation Techniques: Double Bass Arrays

Although the sound field in a room at low frequencies is one of the most discussed topics, approaches to dealing with room modes are typically treated as an optimization problem, and not correctly defined. This article explores a different strategy: the so-called Double Bass Array layout, using several subwoofers placed in a pattern, on the front and rear walls. Using advanced simulation techniques in order to understand what truly happens in the resulting room mode behavior, sound pressure levels, and resonances, this article builds upon existing research (Geddes, Welti, Devantier, et al.)

COMSOL Multiphysics Version 6.3 Introduces GPU-Accelerated Acoustics Simulation

November 20, 2024 by Joao Martins

COMSOL Multiphysics Version 6.3 Introduces GPU-Accelerated Acoustics Simulation

COMSOL continues to expand the possibilities for simulation of real-world designs, devices, and processes, and now announced Version 6.3 of its COMSOL Multiphysics software. As largely anticipated in the recent series of conferences, COMSOL 6.3 introduces a new Electric Discharge Module, GPU-accelerated simulations, and many other updates. The Acoustics Module now offers GPU support for transient pressure acoustics, porous materials in the time domain, SLNS formulation for thermoviscous acoustics, anisotropic poroacoustics, and much more

COMSOL Conference 2024, Boston: Acoustics Up Front

October 11, 2024 by Roger Shively

COMSOL Conference 2024, Boston: Acoustics Up Front

After a five-year gap for in-person conferences from COMSOL, the 2024 event in Boston, MA - part of a planned series now expanding to Europe (Florence, Italy) and Asia (Shanghai, China) - was a very successful return. audioXpress was invited to attend, as more and more audio developers and manufacturers use COMSOL's Acoustics Module, Structural Mechanics Module, and the AC/DC Module, among others integrated in the leading Multiphysics modeling and simulation software.

Sharing the Knowledge. audioXpress October 2024 Is Now Available!

September 12, 2024 by audioXpress Staff

Sharing the Knowledge. audioXpress October 2024 Is Now Available!

Read the extended Show Report of the 5th International AES Conference on Automotive Audio. Santiago Rayes (GRAS Acoustics) explains the latest advances in Measurement Microphones for Automotive Testing. Reinhold Lutz writes about Eliminating Speaker Doppler Distortion, René Christensen shares an exercise of Double Bass Arrays, and Joerg Panzer (R&D Team) and Patrick Macey (PACSYS) share their Experimental and Theoretical Investigation of an Unusually Shaped Horn. Jan Didden reviews Bob Cordell’s latest book, “Designing Audio Circuits and Systems”.

R&D Stories: Using Multiphysics Simulation for an Electrovibroacoustic Analysis of a Balanced Armature Transducer

July 25, 2024 by Jinlan Huang

R&D Stories: Using Multiphysics Simulation for an Electrovibroacoustic Analysis of a Balanced Armature Transducer

This article explains how multiphysics modeling and simulation can be used to analyze electroacoustic transducers. Using a balanced armature transducer as example, the analysis combines the electromagnetic field with structural vibrations and acoustic radiation using multiphysics coupling features. A moving mesh is also used to model the back Electromotive Force (EMF).

Simulation Techniques: Dimensional Reduction for Vibroacoustical Simulations

July 10, 2024 by René Christensen

Simulation Techniques: Dimensional Reduction for Vibroacoustical Simulations

As computational demands can be very high when doing simulations involving coupled physics - such as is often the case for vibroacoustical transducers - this article looks at how to reduce the computational demands and associated cost utilizing symmetry schemes and dimensional reductions techniques, and the potential associated issues. This article was originally published in audioXpress, June 2024.

Unveiling the Impact of Ear Canal Geometry for In-Ear Headphone Testing

June 26, 2024 by GRAS Sound & Vibration

Unveiling the Impact of Ear Canal Geometry for In-Ear Headphone Testing

Frequency response is not the only important factor in testing in-ear headphones, and instead, the listening experience is largely influenced by how the pressure field is built up in the semi- or fully closed ear simulator, making leak and insertion position overshadowing parameters. This article shares the simulation work to assess the pressure field and its impact on different ear canal geometries, with surprising conclusions, fundamental to ensure consistency and repeatability when characterizing in-ear devices.

High End 2024 - The Munich Show, the Trade and B2B

May 16, 2024 by Joao Martins

High End 2024 - The Munich Show, the Trade and B2B

High End Munich 2024. Once again, one of best organized audio shows in the world, with a wide spectrum of very high-quality audio solutions presented, and an excellent business environment. All perfectly complements this international trade show, making it highly valuable for all. A true "marketplace" for the audio industry in the best sense of the term. These are my first impressions.

audioXpress June 2024 Models Automotive Audio Development

May 13, 2024 by audioXpress Staff

audioXpress June 2024 Models Automotive Audio Development

audioXpress June 2024 puts automotive audio development into perspective. Starting with how AI and SDV are impacting the industry, an analysis of Integrated Audio Development Frameworks, how sound defines the driving experience of Electric Vehicles, and lessons learned from aftermarket car audio. Learn how to measure MEMS microspeakers, enjoy two great multiphysics simulation articles by Jinlan Huang and René Christensen, and much more.

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