AES Audio Product Education Institute

Multiphysics Simulation in Audio Product Design

Wednesday, April 14, 2021

12:00 PM - 2:00 PM US Eastern
11:00 AM - 1:00 PM US Central
10:00 AM - 12:00 PM US Mountain
9:00 AM - 11:00 AM US Pacific
4:00 PM - 6:00 PM UTC

About this event

The Audio Product Education Institute (APEI) presents a webinar on modeling and measurement, focusing on exploring multiphysics simulation as a tool for the audio engineer. Speakers from Tectonic Audio Labs, Veryst Engineering, and COMSOL will share their experiences in three separate sessions, followed by time for questions. This webinar will provide an overview of the use of simulation in audio product design, addressing virtual prototyping, testing, measurement, multiphysics simulation, and optimization. 

Together, we will look at questions such as why and how companies use simulation for audio product design, with examples from specific projects. We will also look at how simulation apps can enable collaborative design, where team members with different expertise and perspectives can use simulation to explore new concepts and make design decisions. We will look into resources that are available for learning the how-tos, and we will hear an acoustics engineer, consultant, and software developer share their experiences from simulation projects and their thoughts on how to ensure success in audio product design using simulation.  

This event will be presented by Mads J. Herring Jensen, COMSOL’s Technology Manager Acoustics. Following the opening remarks and introduction, the event will feature three presentations from Tim Whitwell (VP Engineering, Tectonic Audio Labs), Nagi Elabbasi (Partner, Veryst Engineering), and Mads Jensen (COMSOL).

Session 1: Tim Whitwell (Tectonic Audio Labs)

Measuring and Simulating the Acoustic Sound Power Response of Loudspeaker Drive Units

Contemporary listening habits have changed considerably in the last decade, particularly with the widespread adoption of smart speaker devices. Today’s listener is rarely positioned in the loudspeaker’s “sweet spot,” directly facing the drive units. As a result, the single-point sound pressure level (SPL) measurement is not as relevant a metric for quantifying a listener’s experience in a given environment. Tectonic Audio Labs has been actively pushing the sound power response as probably the most effective metric for evaluating how a given device will sound throughout a room. In this presentation, Tim Whitwell will describe what the sound power response is, how it can be measured, and how it can be simulated in COMSOL Multiphysics.

Session 2: Nagi Elabbasi (Veryst Engineering)

Noise Reduction Through Measurement and Simulation: Case Studies

Engineering firms are increasingly relying on acoustic simulations to improve their products and shorten their design cycles. This presentation details several acoustics-focused projects that span a wide range of products and acoustics analyses. Based on its practical experience at Veryst Engineering, Nagi Elabbasi will focus on applications involving noise reduction, where simulation was combined with acoustic/vibration measurements to identify the sources of noise in consumer products. The designs were then modified accordingly to achieve significant levels of noise reduction. The noise sources detected range from cyclic impact events, mechanical or acoustic resonance, turbulence-generated noise, and flow instabilities. The presentation will also briefly discuss other acoustics analyses performed at Veryst involving nondestructive testing, ultrasonic tissue ablation, and thermoviscous acoustics.

Session 3: Mads J. Herring Jensen (COMSOL)

Insight and Innovation Through Simulation

The role of simulation and virtual prototypes in the audio industry has grown rapidly within the last decade. Companies have been able to reduce the number of physical prototypes and thus reduce the development time. In this presentation, we will discuss examples of simulations that give engineers an insight that measurements cannot easily do. This presentation will also look at how optimization can be used for novel designs and for improving the performance of an existing design.

Joao Martins
Mia Johansson
Jinlan Huang
Mads Herring Jensen
Tim Whitwell
Nagi Elabbasi