Hearables, Headphones Testing, Audio Electronics, and More in audioXpress April 2023

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....

TDK Corporation introduced the InvenSense T3902, which the company touts as the world’s lowest power Pulse Density Modulation (PDM) microphone for consumer devices. The new T3902 offers a high SNR of 64.5 dB, and high Acoustic Overload Point (AOP) of 120 dB in a very small package, optimized for mobile devices, wearables, headsets, TV remotes and more, supporting far-field communications, enabling clear audio capture in loud conditions, and ideal for voice recognition.

TDK Corporation showcased a Synaptics AudioSmart solution for voice recognition, using InvenSense high performance MEMS microphones. The ICS-40212 and ICS-40720 analog output and the ICS-41350 PDM digital output MEMS microphones are approved for use with Synaptics AudioSmart Amazon Voice Services (AVS) solution. TDK also announced the worldwide availability of its SmartMotion Platform encompassing 4 unique development kits with multiple sensors.