Product Development, Speakers, and Acoustic Analysis in audioXpress September 2023

audioXpress September 2023 is a rich issue in the amount of audio topics explored and depth of analysis. Learn about the latest sound meters and acoustical simulation tools, what immersive audio really is, and what is possible with the development kits for true wireless earbuds from Knowles. Roger Shively does a full analysis of the Dinaburg C2S Concentric Coplanar Stabilizer speaker technology, Charlie Laub explains how to build a Minimally Baffled Dipole Loudspeaker, and Gary Gesellchen reveals viable bass reflex speaker designs.

Want to understand what's ahead in the most revolutionary audio product category of the 21st century? Read the State of the Hearables Industry Market Update. And for product developers and manufacturers, there's also a Headphones Test and Measurement report. Burkhard Vogel discusses op-amp noise in simulated models, Bruce E. Gillingham offers a complete monoblock power amplifier project, and René Christensen writes about acoustic topology optimization. And so much more....

Registration is now open for the upcoming Electroacoustic Virtual Conference, an event promoted by Hottinger Bruel & Kjaer (HBK), which this year will be fully online and offers an exciting two-day program. The Electroacoustic Conference will offer presentations from experts in all areas related with sound, noise, acoustics and vibration, with more than 21 presentations already scheduled. Sessions include presentations from companies such as Head-Fi, XMEMS Micro Speakers, Comsol, Embody VR, Vibrations Inc., Harman International and more.

The Electroacoustics Conference offers presentations from HBK experts and industry professionals highlighting the work that has been done to develop new tools, products and methods to evaluate future products. Two days of knowledge about DSP, Physics and Human Perception, Simulation, DIY ElectroAcoustic Programming and Test Services, Electroacoustic Applications, Ear Simulators, HATS Technologies and Non-Contact Transducers and more.

To help engineers and acousticians achieve accurate measurements in everyday tasks, Bruel & Kjaer has created a robust and reliable 1/2-inch CCLD pressure-field microphone - Type 4971-H-041. This new microphone was designed for measuring close to hard reflective surfaces, close to sound ports of audio devices or in flush mountings. The new Bruel microphone is also suitable for random-incidence measurements and free-field measurements with 90° incidence.

The companies Hottinger Baldwin Messtechnik GmbH (HBM) and Brüel & Kjær Sound and Vibration A/S (BKSV), both owned by UK-based Spectris plc, have announce that they will be merging their businesses. The merger will become effective on January 1st, 2019. The merger aims to redefine the concept of a complete solution, where the two companies will unite their expertise and provide an integrated offering, encompassing sensors, acquisition, preparation, evaluation and engineering services.