Patent Review: Loudspeaker Having a Passive Radiator US9426548B2
This article discusses a very interesting design and patent granted in August 2015 to Gary A. Rayner and James C. Larsen, as the inventors, on behalf of Treefrong Developments, from San Diego, CA. The patent abstract details a loudspeaker using one or more active drivers, with a passive radiator connected to each driver and dedicated processors and amplifier per channel - a slightly different approach to a familiar concept. This article was originally published in Voice Coil, November 2015.
Jabra Designs Fitness-Oriented Jabra Elite 4 Active True Wireless Earbuds with ANC
Jabra announced its latest addition to the brand's True Wireless Elite series, with the Jabra Elite 4 Active. Bringing the Elite Active range to a broader audience, the Jabra Elite 4 Active earbuds are particularly suited for those who love an active lifestyle, including popular workouts like yoga, boxing, or running. This price-conscious product ($119) with Active Noise Cancellation (ANC) and HearThrough technology, offers a secure. IP57-rated active fit, and allows great call quality.
R&D Stories: The Tetrahedral Test Chamber Story (Part 2) - Consistent Loudspeaker Measurements
In this article Geoff Hill completes the Tetrahedral Test Chamber story, a concept born out of necessity, simple wavelength theory and Beranek's wedges, measurement theory, and building upon experience gained in designing chambers in Europe, US, and Asia. These chambers are now in use throughout the world, providing consistent, reliable, and accurate measurements of loudspeaker transducers and loudspeaker systems. This article was originally published in audioXpress, October 2021.
xMEMS Announces Montara Pro MEMS Drivers with Integrated DynamicVent for Intelligent TWS Earbuds and Hearing Aids
xMEMS Labs introduced Montara Pro, a MEMS microspeaker with an integrated solution that opens or closes the vent by sensor fusion input from the system DSP. This approach enables smart TWS earbuds and hearing aids that create best-of-both-worlds user experiences, combining the benefits of closed-fit (occluded) and open-fit earbuds. xMEMS is providing first demonstrations of Montara Pro this week at the Consumer Electronics Show in Las Vegas at Venetian Suite 29-325.
New Ashdown Meters Linx aptX Adaptive TWS Earbuds and Speakers
Easily claiming the coolest design among all products unveiled in advance for CES 2022, particularly in the crowded TWS earbuds product segment, the latest Ashdown Meters Linx by Ashdown Engineering expand to the desktop space with a clever Qualcomm-based implementation. Yes, the Ashdown Meters Linx are Qualcomm-powered true wireless earbuds which stand-out because of the cool VU meter on the charging case, but also because of the optional pair of miniature wireless speakers for desktop enjoyment.
New Speaker, Headphone, and Earphone Perspectives with Voice Coil January 2022
We're off to a great start in 2022. Starting with details about the promise of Iron Nitride (FeN) magnets, followed by an article about Liquid Injection Molding Silicon for Next-Generation Headphone Surrounds. Next up, James Croft reviews a surround speaker patent granted to Klipsch, and Vance Dickason characterizes the Satori MW13TX-4 TPCD-cone woofer from SB Acoustics and the high-power WF275BD01 10.75" woofer from Wavecor. All articles now available to read online, PDF and print.
audioXpress.com - The Most Popular Stories of 2021
We looked at the most-read articles of 2021 in audioXpress.com (including selected articles from Voice Coil magazine), and we created this Top 10 list of news stories and online articles. 2021 expanded slightly on the record-breaking year that was 2020 for audioXpress.com, in terms of number of visits and regular users of the website. Visitors from all over the world returned more often to read the more than 7,700 stories available. Which of the topics and stories published online in 2021 were the most popular? Here are the results!
TASCAM Celebrates Analog Audio with Limited Release Master 424 Studio C-60 High Bias Type II Cobalt Cassette
In celebration of the company’s 50th anniversary, TASCAM launched the TASCAM Studio 424 Master cassette, a limited release genuine high bias cobalt oxide cassette specifically engineered for use with TASCAM Portastudio cassette recorders. The tape formulation was tested specifically in recalibrated and restored vintage TASCAM Portastudio workstations - the multitrack recorders that opened the door to home recording over 40 years ago.
Cleer Audio Introduces Adaptive Active Noise-Cancelling Headphones With Immersive Sound Powered by Dirac
Cleer Audio announced the introduction of its Cleer Alpha Noise Cancelling Wireless Headphones, which is one of the brand's two products already confirmed as CES 2022 Innovation Awards honorees. Cleer's next generation wireless headphones offer Adaptive Active Noise Cancellation, paired with immersive theater-like sound reproduction, powered by Dirac Virtuo spatial audio technology.
AIAIAI TMA-2 Wireless+ Headphones Feature Proprietary Low-Latency Wireless Audio Transmitter
AIAIAI surprised once again the audio industry. Following a period of intense beta-testing with key profile users and influencers, the Danish headphone innovator "dropped" the latest TMA-2 Wireless+ headphones, designed to free music creators from cables with ultra-low latency and uncompressed, 16-bit digital audio. And following the company's responsible design philosophy, with products designed to last, the new model is based on the existing TMA-2 modular headphone platform.