Audio Precision Launches HDMI2+eARC Module for HDMI2 and eARC Audio Channels Testing

Audio Precision introduced a new HDMI2 + eARC module for the APx range of audio analyzers, providing fully integrated digital I/O connection to audio devices equipped with HDMI2 and eARC. This innovative solution gives designers and manufacturers the ability to easily test audio in a wide range of HDMI audio-compatible devices, including streaming media players, televisions, soundbars, receivers, and Blu-ray players.

For those who need to refresh their knowledge or learn about audio test and measurements, Jan Didden reviews a great - and big! - book on the topic. Audio Tests & Measurements by Igor S. Popovitch is one of the many self-published works by this proficient writer based in Australia, also the author of several popular books on vacuum tube amplifiers. This particular book runs about 180 pages, but that is deceiving as the book’s format (A4 size) is about twice the size of most soft cover books.

Adding a great perspective on the topic of test and measurement, in particular for production lines, this article makes the case for using web interfaces, and embrace web standards for automated testing of audio equipment. The founder of QuantAsylum advocates an open-design philosophy for controlling and querying things via REST, which stands for Representational State Transfer, a widely accepted set of guidelines for creating reliable web APIs and leveraging the know-how of millions of developers.

German company Microtech Gefell, founded in 1928 by Georg Neumann, offers one of the most complete catalogs of measurement microphones - a completely eco-system for every audio testing need. Once in a while they remember to let us know that new models are being added. This year, the company announced the MMS 212, a rugged measurement microphone combo for harsh environments and the MMS 214 model for very low sound pressure levels. Additionally, the company is now shipping the new MV 240, a measurement microphone preamplifier with an analog-to-digital converter.

After a decade of widespread use, the Dayton Audio Test System (DATS) has acquired an impressive reputation for fast and accurate testing. A must have tool for the speaker builder and a very valuable tool for anyone who regularly works with audio equipment, Dayton Audio has taken the easy-to-use audio test system and improved it in almost every way when creating the DATS V3 Computer Based Audio Component Test System.

Listen Inc announced its 20th year as a leading provider of audio test and measurement systems. Two decades of innovation and steady growth have made Listen’s flagship product, SoundCheck, an industry-standard audio test system in the consumer electronics industry. The company is commemorating the occasion with updated branding, a new website, and a free SoundCheck demo software offer!

Usually we think of noise as a signal to be eliminated, or at least reduced, in any audio system. However, noise can be a very useful test signal because it is inherently broadband, which is faster and perhaps more accurate than spot or swept frequency testing. Article originally published by Voice Coil, December 2010