All items tagged with Michael Steffes (10)

audioXpress February 2022 Captures the Sound of Today

January 11, 2022 by audioXpress Staff

audioXpress February 2022 Captures the Sound of Today

The February 2022 edition of audioXpress is now available and features our annual Market Update on Microphone technology. Vikrant Singh Tomar discusses TinyML and Voice Recognition Technology On the Edge, Richard Honeycutt writes about Quantification of Speech Intelligibility, and Mike Klasco expands on audio applications for Haptic Devices. George Ntanavaras builds a phono and line/headphone amplifier project, Brian Bylenok proposes a refined Current Feedback Headphone Amplifier, and Richard Honeycutt reminds us that Tube Power Amps also have Classes. Now available in print and online.

audioXpress May 2021 Celebrates Its Glass Audio and Audio Electronics Roots

April 12, 2021 by audioXpress Staff

audioXpress May 2021 Celebrates Its Glass Audio and Audio Electronics Roots

Our May 2021 Glass Audio Special edition is certain to inform and inspire you. We reveal what is happening at Western Electric's new Rossville Works in Georgia, where production of 300B tubes is ongoing, we explain how to draw tube load lines, and we offer a valuable preamplifier design that enables you to compare the sound of tube and solid-state circuits from the same audio source. There's also a versatile stereo tube amplifier design to build, and plenty more audio electronics theory and practice in this edition. Now available online and in print.

audioXpress March 2021 Brings Increased Focus on Audio Test & Measurement

February 11, 2021 by audioXpress Staff

audioXpress March 2021 Brings Increased Focus on Audio Test & Measurement

For this edition of audioXpress, start with our valuable Market Update on Audio Test and Measurement, followed by an interview and guided tour of QuantAsylum. From a practical perspective, Stuart Yaniger shares his experience with the latest version of Virtins Multi Instrument Measurement Software, Michael Steffes explains how to explore an interesting composite amplifier structure for great results, Mike Meechan continues his series on microphone preamplifier design, and Ethan Winer explains how to avoid too much wiring in large designs. Another great edition of audioXpress, now available to read in print and online.

The Audio Technologies That Matter More Than Ever in audioXpress February 2021

January 11, 2021 by audioXpress Staff

The Audio Technologies That Matter More Than Ever in audioXpress February 2021

audioXpress February 2021 explains why Microphones have gained Essential Status, and how microphones have a foundational contribution to voice front-ends. Erica Yorga details how Thousands of Virtual Microphones can solve audio conferencing challenges, and Mike Meechan explains how to design high-performance microphone preamplifiers. Brent Butterworth reviews the Widex Moment mRIC RD hearing aids to understand the differences and similarities in the critical sound experience. Michael Steffes explains how to increase the output current for an audio op-amp, and Andrew C. Russell details the X-Altra, a high-performance MC/MM phono equalizer DIY project. Now available in print and digital.

Testing, Measuring, and Smart Audio Solutions in audioXpress December 2020

November 11, 2020 by audioXpress Staff

Testing, Measuring, and Smart Audio Solutions in audioXpress December 2020

Ending the year with great content, as we do 12 times per year, audioXpress December 2020 is now available in print and online. In this edition, we pay tribute to Jeff Bagby, explore the QuantAsylum QA401 audio analyzer combined with the new QA451 programmable load, and explain the process of measuring wireless audio products using multi-tone testing. Plus, Brewster LaMacchia expands on A2B designs, Gary Galo details how to improve low-output moving-coil cartridges with his Jensen-based step-up transformer, and Mike Harkins reviews the versatile Puffin Phono DSP by Parks Audio. And much more, now available!

More Digital Signal Processing and Better Audio in audioXpress November 2020

October 9, 2020 by audioXpress Staff

More Digital Signal Processing and Better Audio in audioXpress November 2020

This audioXpress November 2020 edition explores the latest trends in digital signal processing (DSP) and how it applies to all audio applications, now increasing in power thanks to cutting-edge artificial intelligence running on devices. In this issue, you will also learn how to "Test and Optimize Strategies for Conference Terminal Equipment," "What to Measure for Quality Control of Audio Devices," and more about Automotive Audio Bus A2B. Stuart Yaniger reviews the latest Earthworks M23R Measurement Microphone, and you can read articles about acoustics, audio electronics and the best in DIY audio from our monthly columnists.

audioXpress September 2020 Speaker Focus Edition Is Now Available!

August 10, 2020 by audioXpress Staff

audioXpress September 2020 Speaker Focus Edition Is Now Available!

Our always popular loudspeaker edition is now available online and in print! audioXpress' Speaker Builder, Speaker Focus edition covers loudspeaker building, design, and testing with a balanced amount of DIY, speaker history, theory, R&D, and manufacturing articles. Read two articles about speaker history, a review of the Magnepan LRS, explore the details of two amazing speaker builds, and learn how to do loudspeaker measurements at home. And there's much more in speaker research and development, measurement, and production!

Essential Updates on Headphones, TWS, Hearables, Voice and More in audioXpress April 2020

March 9, 2020 by audioXpress Staff

Essential Updates on Headphones, TWS, Hearables, Voice and More in audioXpress April 2020

The April 2020 edition of audioXpress is now available and features two essential Market Updates, one focusing on the industry transition to active headphone and earphone designs, and another on how to leverage the latest voice capture and processing technologies. The issue also explains how to evaluate listening effort, and Stuart Yaniger puts the Linear Audio Autoranger Mk II Interface to the test, while Ed Simon writes about AC Power Rectification. Another issue to read and use as reference.

Listen, Test, and Measure It! audioXpress March 2020 Now Available.

February 11, 2020 by audioXpress Staff

Listen, Test, and Measure It! audioXpress March 2020 Now Available.

audioXpress March 2020 focuses on Audio Test & Measurement. In this edition, learn how to find the right Test & Measurement solution, learn more about how to optimize audio production tests, and read the review of the new Dayton Audio DATS V3 Test System. Luke McCready also reviews the fantastic Audeze Mobius planar magnetic, wireless headphones. There's plenty more to read and learn about in our regular columns Sound Control and Audio Scope, plus a new article from Ed Simon on Powering Audio Circuits.

Are You Serious About Audio Electronics? audioXpress November 2019 Is Now Available!

October 9, 2019 by audioXpress Staff

Are You Serious About Audio Electronics? audioXpress November 2019 Is Now Available!

The November 2019 edition of audioXpress is now available with a wide range of technical topics in audio electronics and design. We review the Benchmark LA4 Line Amplifier and the new Hooke Verse Bluetooth Binaural Recording Headphones. Jan Didden proposes an updated version of his High-Voltage Delay for Tube Amplifiers, and Thomas Zarbo, Jr. explains how to build his Tenacious Bass-8 Powered Subwoofer. And, learn more about Data-Over-Sound, MU amplification topologies, and Auverdion’s Aurora open-source DSP platform. Now available!