Two closed-loop test systems Digital multichannel audio bus testing with audio analyzer - EPP Europe

Two closed-loop test systems

Digital multichannel audio bus testing with audio analyzer


In cooperation with Mentor Automotive, Audio Precision has developed a concept system that incorporates an eight-channel AP x 585 audio analyzer, as well as, Mentor’s A2B analyzer platform to go along with the digital audio bus technology, the Automotive Audio Bus (A2B), developed by Analog Devices, Inc.

Digital audio bus technology

Capable of distributing audio and control data together with clock and power over a single, unshielded, low cost twisted-pair wire, A2B significantly reduces the weight of existing cable harnesses (by up to 75 % in key applications), resulting in vehicle fuel efficiency improvement, while delivering high-fidelity audio. It also supports the connection of multiple remote sensors for different applications—voice recognition, active noise cancellation, in-car communications—in a daisy-chain sequence, significantly reducing redundant cable runs.

Closed-Loop, multichannel audio test

The company will demonstrate a concept for a complete, “off-the-shelf” A2B test system using an eight-channel AP x 585 audio analyzer, AP x 500 audio measurement software, and Mentor’s analyzer system and software. Within the concept system, the analyzer platform provides straightforward A2B network configuration and simulation, as well as, flexible, high-fidelity audio routing. The AP x 585 delivers comprehensive, multichannel audio measurement analysis and offers a wide range of interface options. Asio connectivity ties the two analyzer systems together, enabling a true closed-loop test system.

“We’re excited to be working with Mentor Automotive and thrilled for the potential A2B audio test capabilities this concept system demonstrates,” stated Dave Schmoldt, Audio Precision CEO. “And helping engineers—in this case vehicle, automotive subsystem, and component designers—as they endeavor to develop and verify the performance of next-generation audio systems, is at the core of what we do.”


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