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Acoustics & Vibrations Blog Posts

Acoustic Topology Optimization with Thermoviscous Losses

February 28, 2018

A guest blogger from GN Hearing discusses including thermoviscous losses in the topology optimization of microacoustic devices, such as hearing aids, mobile phones, and metamaterial geometries.

Analyzing the Viscous and Thermal Damping of a MEMS Micromirror

January 29, 2018

Micromirrors are efficient and inexpensive. Here, we go over 2 types of analyses for a MEMS micromirror design, frequency-domain and transient, using the COMSOL® software.

How to Use Dispersion Curves to Analyze Fluid-Filled Pipes

November 8, 2017

Modeling a fluid-filled pipe is both a time-consuming and computationally expensive process, but there’s a way to streamline the process: a guided wave propagation approach via dispersion curves.

Have You Heard About the Cocktail Party Problem?

November 7, 2017

You’re at a party with loud music and a ton of people. Despite the noise, you are able to chat with a friend. How is it that you can differentiate his or her voice from all the sounds around you?

Keynote Video: Using Simulation to Develop Reliable Audio Transducers

November 1, 2017

An engineer from a loudspeaker company discusses using simulation to design a component that can handle fatigue, environmental conditions, and user wear and tear. Watch the presentation.

Is That a Ghost? Vibroacoustic Explanations for False Poltergeists

October 31, 2017

Creepy sounds are often misinterpreted as paranormal activity, when in fact, they can be explained with vibroacoustics, mechanical resonance, and attenuating sound.

Evaluating the Effect of Shell Thickness on Muffler Performance

October 3, 2017

Guest blogger Linus Fagerberg from Lightness by Design follows up a previous post with a discussion of one design consideration for the radiated sound in a muffler design: shell thickness.

Predicting the Sound Emission of a Muffler Design via Simulation

September 14, 2017

Cars with subpar mufflers are annoyingly loud. Guest blogger Linus Fagerberg from Lightness by Design discusses a novel, simulation-based approach to predict noise generation in muffler designs.


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