Advanced Test Module for HDMI2 & eARC Audio Channel Analysis

31 August 2023

Audio Precision has announced the release of its HDMI2 + eARC module. This arms engineers with a fully integrated digital I/O module that enables direct connection to HDMI2 and eARC audio devices.

Using the module means that audio testing can be conducted over a broad range of items of HDMI audio-compatible equipment - including streaming media players, TVs, soundbars, etc. It presents a turnkey solution capable of supporting all audio formats embedded into HDMI - facilitating verification of ARC and eARC, sink and source audio channels while supporting 1K, 4K and 8K video modes. With the ability to handle up to 8 channels of linear pulse-code modulation (PCM) audio at sample rates reaching 192kHz, it also enables playback of pre-encoded signals - such as Dolby Digital Plus and Dolby TrueHD, as well as DTS and DTS-HD signals. Furthermore, it provides bit error detection in all received audio formats, ensuring the highest level of audio quality is maintained.

“HDMI is a ubiquitous interface for connecting displays and home-theatre audio devices. The latest update to the standard, v2.1, supports ultra-high-definition video and additional audio functionality, including the enhanced audio return channel eARC,” states Daniel Knighten, General Manager of Audio Precision. “To date, no company has provided a solution for simple and efficient testing of the audio features of these devices. Today Audio Precision brings to market a new interface module that makes it as easy to test HDMI2 and eARC audio as we have previously made testing other analogue and digital audio interfaces.”


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