A2B Audio Bus: Two Alternative Power Schemes

In the second article about the latest generation A2B technology from Analog Devices - expanded with the release of the AD2437 chip - Brewster LaMacchia explores the latest possibilities for audio applications in many other areas other than automotive audio. After reviewing the three generations of A2B technology, LaMacchia expands on the alternative power schemes that deserve some investigation for multichannel digital audio applications. This article was originally published in audioXpress, August 2024.

In this article, Brewster LaMacchia explores the release of the latest A2B AD2437 chip from Analog Devices. He explains how A2B has been evolving to support many applications in home cinema, studio, stage, musical instruments and much more, with support for up to 16 nodes, transmitting 32 channels of 24-bit/48kHz digital audio and optional data with the lowest latency (50μsec) at up to 30 meters.

audioXpress August 2024 features our traditional Acoustical Solutions Round-Up, while Active Acoustic Enhancement Systems are also discussed in the Sound Control column. Oliver Masciarotte reports from AXPONA 2024, Philipp P. Klose reviews the new IK Multimedia ARC Studio solution, and Brewster LaMacchia expands on alternative power schemes for audio applications with A2B. On audio electronics, Charlie Laub explores Notch Filters, and Todd Schneider details his High-Fidelity Active Direct Box project.

audioXpress July 2024 is all about Audio Amplifiers. Jan Didden visits ICEpower. Ward Maas interviews Jan-Willem Winters from Hypex. Oliver Masciarotte reviews the WiiM Amp. Thomas Lund explains why Loudness Normalization is so important. Richard Honeycutt explores the new Orange Valve Tester MKII. Brewster LaMacchia explains all that has evolved in Ten Years and Three Generations of A2B. Ethan Winer details how to build a truly unique Speech Compressor. And so much more...

In this article, Brewster LaMacchia concludes his series on Automotive Audio Bus (A2B) applications (not just for automotive). After an introduction to the properties of this locally networked audio transport, a look at A2B system design, and A2B data transport and interface, in Part 4, the author looks at systems and tools that are available to speed prototyping and evaluation. This article was originally published in audioXpress, January 2021.

Following the cancellation of the scheduled in-person convention and activities, the Audio Engineering Society is promoting a series of online activities in order to bring its AES Fall Online 2021 Convention to a worldwide audience. Starting Monday, October 11, with live-streamed and on-demand events continuing through the month of October, all the events are included in one registration.

audioXpress continues Brewster LaMacchia's article series on Automotive Audio Bus (A2B) technology from Analog Devices. The first two parts of this article examined the overall A2B system operation and how its features can enable new types of digital audio applications. Now, the author takes a deeper look at A2B data transport and how to interface between peripherals and the A2B bus using Analog Device's AD242x series of parts. This article was originally published in audioXpress, December 2020.

The second article in a four-part series about Analog Devices' A2B or Automotive Audio Bus explores the technical underpinnings of the A2B bus design. Brewster LaMacchia examines how certain optimizations for automotive applications must be accounted for when targeting broader audio applications. He also includes a look at analog phantom power and how A2B provides that feature in a digital system. This article was originally published in audioXpress, November 2020.

This is the first article in a four-part series about Analog Devices' A2B or Automotive Audio Bus, a digital audio bus technology originally developed for automotive requirements that is finding interesting design possibilities in other audio applications. This first article discusses the main features of A2B, and its use with I2S and PDM interfaces, before exploring the technical underpinnings of the A2B bus design and creating systems with the development tools available. This article was originally published in audioXpress, October 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!