All items in category Magazine Articles
R&D Stories: QuantAsylum, A Real-World View of Test and Measurement
by David Logvin

R&D Stories: QuantAsylum, A Real-World View of Test and Measurement

Following the review of two QuantAsylum’s products featured in the December 2020 edition of audioXpress, David Logvin interviews Matt Taylor, the president and founder of QuantAsylum - a unique and fast growing test and measurement company based in the state of Washington - that adopted a unique modular product/solution approach that seems to be incredibly agile, adjusting well to current times. This article was originally published in audioXpress, March 2021.
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Resonado Labs, the technology startup founded at the University of Notre Dame, Indiana, and now based in Chicago, IL, is ready to bring to market its patented speaker technology. This article describes Resonado's core Flat Core Speaker (FCS) technology that uses a reconfigured design with a planar voice coil mounted perpendicularly to its flat “race track” diaphragm - an ingenious architecture that enables slightly thinner, lighter, and more efficient speakers than conventional equivalents. Applications are wide-ranging from soundbars, home theater, column speakers, automotive to headphone drivers.
by Brian Cho

A New Standard of Low-Depth Racetrack Speaker Drivers with Flat Core Speaker Technology

Resonado Labs is ready to bring to market its patented speaker technology. This article describes Resonado's core Flat Core Speaker (FCS) technology that uses a reconfigured design with a planar voice coil mounted perpendicularly to its flat “racetrack” diaphragm - an ingenious architecture that enables slightly thinner, lighter, and more efficient speakers than conventional equivalents. Applications are wide-ranging from soundbars, home theater, column speakers, automotive to headphone drivers. This article was originally published in Voice Coil, January 2021
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MEMS and Other Leading-Edge Devices for Wearables - 2021 Update
by Mike Klasco

MEMS and Other Leading-Edge Devices for Wearables - 2021 Update

In this article for Voice Coil, Mike Klasco (Menlo Scientific) recaps MEMS Drivers and related hot technologies for 2021, providing an update about products and companies that stood out in 2020. The article, which summarizes the more extensive reports published by audioXpress in January 2020 and 2021, looks at the impact of microelectromechanical systems (MEMS) for audio and discusses the implications for other game-changing technologies that reduce size, increase performance, extend battery life, and enhance features and functionality in headphones, wearables and compact speakers.
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Patent Review: Diaphragm for Full Range Boxless Rotary Loudspeaker Driver
by James Croft

Patent Review: Diaphragm for Full Range Boxless Rotary Loudspeaker Driver

Following a recent exchange with loudspeaker designer and inventor John J. Gaudreault, we decided to revisit the very original Planar-Pivot (Planot) Transducer, and make available the two related articles that were published by Voice Coil in its May 2011 edition, and the respective Patent Review by James Croft published in the August edition of that same year. Hoping this will inspire some commercial implementations of this interesting concept, available for licensing.
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Fresh From the Bench: Widex Moment mRIC RD Hearing Aid
by Brent Butterworth

Fresh From the Bench: Widex Moment mRIC RD Hearing Aid

In this article for audioXpress, Brent Butterworth reviews the Widex Moment mRIC RD hearing aids. In a first for his career as a regular reviewer of headphones, hi-fi components, and other consumer audio products, Butterworth spent considerable time with the Widex Moment, one of the newest entries in the high-tech hearing aid category. His review objectively looks at the differences and similarities in the critical sound experience.This article was originally published in audioXpress, February 2021.
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R&D Stories: The Impact of Acoustic Spatial Resolution in a 3D Space
by Erica Yorga

R&D Stories: The Impact of Acoustic Spatial Resolution in a 3D Space

Nureva's Microphone Mist technology is a patented concept of generating thousands of virtual microphones in a 3D space. This article explains why this can be the alternative approach to the status quo of physical microphones and beamformer systems to create perfect audio conferencing solutions in any type of room and with multiple users. This article was originally published in audioXpress, February 2021.
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Patent Review: Two Single-Ended Planar-Magnetic Speaker Patents
by James Croft

Patent Review: Two Single-Ended Planar-Magnetic Speaker Patents

James Croft reviews two loudspeaker-related patents as a tribute to David John Graebener, who passed away on January 3, 2015. First James Croft reviews the planar-magnetic electro-acoustic transducer he patented together with Graebener, followed by a single-end planar magnetic speaker system, David’s key patent. These were the first and second of the Single-Ended, Neodymium planar magnetic transducer patents David Graebener was granted. This article was originally published in Voice Coil, March 2015.
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Patent Review: Loudspeaker With a Wave Guide
by James Croft

Patent Review: Loudspeaker With a Wave Guide

This patent review looks at a “Loudspeaker with a Wave Guide” (Patent Number: US20140369543) by inventors Jussi Vaisanen and Ilpo Martikainen from Finish company Genelec. This patent relates to the Genelec 8351 Acoustically Coaxial Smart Active Monitor (SAM) monitor, originally launched in 2016. Later in 2017, Genelec expanded the concept into a complete series of Coaxial Active Monitors, “The Ones”. This article was originally published in Voice Coil, February 2015.
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Electrostatic Pure Silicon Microspeakers for Wireless Earbuds
by Hermann Schenk

Electrostatic Pure Silicon Microspeakers for Wireless Earbuds

This contributed article by Hermann Schenk, and Lutz Ehrig describes a new transducer technology that promises to be a power efficient solution for wireless earbuds. Arioso Systems is a successful Fraunhofer IPMS spin-off company that is now launching an innovative sound transducer principle for miniaturized headphones, in-ears and hearables. The article describes how this new technology, and specifically the company's new MEMS topology can contribute to the next-generation of true wireless earbuds.
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Patent Review: Compact Stand-Alone Stereo Loudspeaker
by James Croft

Patent Review: Compact Stand-Alone Stereo Loudspeaker

James Croft looks at an interesting new patent covering a “Compact Stand-Alone Stereo Loudspeaker” by inventor Jes Mosgaard from Libratone A/S (Denmark). This patent submitted in 2010, was granted in 2013, and describes a compact and portable stereo loudspeaker system that is capable of providing a spacious sound field using an internal stereo pair of loudspeakers arranged in a dipole configuration. This article was originally published in Voice Coil, February 2015.
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