In this issue

8 Evolving Residential Installation - Home Entertainment and Workspaces
20 Testing Electroacoustical Systems
24 Extracting Input Referred Op-Amp Noise Models
28 GeerFab Audio D.BOB- Digital Breakout Box
Gary Galo shares his experiences with GeerFab Audio’s new D.BOB Digital Breakout Box, which is the first
de-embedder that will also extract direct stream digital (DSD) from the High-Definition Multimedia Interface (HDMI) audio data.

34 Dealing with Communication Challenges
In this article, audioXpress’ editor-in-chief addresses the lack of a communication protocol for organizations, and the problems of audio quality in existing forms of communications and conferencing tools we use.

40 Enabling High-Quality Voice Conferencing
With the spread of the coronavirus, more employees are working from home and using audio and video conferencing systems. This has led to more discussions about audio quality, which depends on many factors—two major ones are the codecs used and their robustness.

44 Getting Started with Automotive Audio Bus (Part 1) -It’s Not Just for Autos
In the first part of this four-part article series, Brewster LaMacchia examines what Automotive Audio Bus (A2B) is, its features, and its use with I2S and PDM interfaces.

50 High-End Class-D Audio Board for Arduino MKR Family
This article details an Infineon amplifier board featuring integrated MERUS MA12070P proprietary multi-level Class-D ICs.

54 Coffee & Bluetooth Speakers - Desktop Speaker System Using Recycled Coffee Cans
Build this 2.1 Bluetooth-enabled speaker system that demonstrates DIY and eco-friendly credentials.

58 Ultra-Low Distortion Microphone Buffer Amplifier (Part 1) - Construction
Part 1 of this two-part project details the construction of a low distortion microphone buffer amplifier.

64 Design Considerations for a Hollow-State Mixer

audioXpress Magazine Description:

Step into the realm of audio, sound technology, and the latest developments in the field with audioXpress Magazine. We're delighted to introduce you to this publication, your ultimate source for all things related to audio, audio equipment, and the art of sound reproduction.

audioXpress Magazine, published by KCK Media Corp., is not just a magazine; it's your portal to the world of audio and sound technology.

As you explore the pages of audioXpress Magazine, you'll find a world of content that celebrates the magic of sound and audio technology:

* Audio Equipment: Dive into the world of audio gear, equipment reviews, and the latest advancements in the industry.
* Sound Technology: Explore the science of sound, audio engineering techniques, and the art of sound reproduction.
* DIY Audio: Learn about do-it-yourself audio projects, audio kits, and tips for crafting your own sound systems.
* Industry Insights: Stay informed about the latest trends, innovations, and news in the audio and sound technology field.
* Music and Sound: Immerse yourself in the world of music, audio production, and the stories of sound enthusiasts.


audioXpress Magazine is your essential resource for celebrating the magic of sound, understanding audio technology, and connecting with a community that values the science and art of sound. Subscribe now and become part of a community that appreciates the power of sound and music.