In this issue

FROM THE EDITOR’S DESK—New Frontiers in Wireless, by J. Martins, p. 4
MARKET UPDATE—State of the Hearables Industry, by J. Martins, p. 8
MARKET UPDATE—More Choices for Headphones Test and Measurement, by J. Martins, p. 20
Remote Recording in the Rock Era: David Hewitt’s On the Road, Review by Scott Dorsey, p. 28
Acoustic Topology Optimization for Vibroacoustics Applications, by René Christensen, p. 32
SOUND CONTROL—Wrong Things “Everybody Knows” About Acoustics, by Richard Honeycutt, p. 36
Vintage Op-Amp Noise Simulation: Part 1 — Deviation from Realistic Noise Figures in Datasheets, by Burkhard Vogel, p. 40
Monoblock Power Amplifier with Precision Bias Control: Part 1 — The Design, by Bruce E. Gillingham, p. 46
Building a Soundbase, by Ken Bird, p. 56
Power Transformer Parameters, Selection, and Testing: Part 6 — Quality, Reliability, and Design, by Chuck Hansen, p. 62

State of the Hearables Industry

From April 2022 to April 2023, true wireless earbuds and all the efforts to create product concepts in the hearables class have evolved dramatically. That’s why this year’s article focuses on projecting the evolution and the new possibilities.

10+ mins

More Choices for Headphones Test and Measurement

This article is a brief update on test and measurement solutions for headphones and earphones that we couldn't fit in our March 2023 issue. An update on solutions that perfectly complement our hearables-focused article.

10+ mins

Remote Recording in the Rock Era

David Hewitt's On the Road

3 mins

Acoustic Topology Optimization for Vibroacoustics Applications

Acoustic topology optimization is one of the most interesting new technologies in vibroacoustics, and is a powerful tool that enables engineers to find optimal solutions to problems related to their applications. In this article, several acoustic topology optimization examples are shown.

8 mins

Wrong Things "Everybody Knows" About Acoustics

Our acoustic expert sets the record straight about some of the more common misconceptions about acoustics that he has heard over the years.

9 mins

Monoblock Power Amplifier With Precision Bias Control

Part 1- The Design

10+ mins

Building a Soundbase

One of the most successful speaker categories today, soundbars were originally intended to compensate for the poor sound quality of thin-display TVs. This project takes the concept up a notch in sound quality and fidelity for any living room application.

8 mins

Power Transformer Parameters, Selection, and Testing

Part 6 - Quality, Reliability, and Design

10+ mins

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