Hall Technologies October 6, 2023
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Introduction
OVERVIEW
The Hall Technologies HD-AUD-IO is an all-in-one HDMI audio manager capable of extracting audio
from (de-embedding) and inserting audio into (embedding) an HDMI video signal. The product also
provides EDID management features.
The product provides one HDMI input with a corresponding HDMI output. The HDMI input audio signal
simultaneously extracts to both 2-channel L/R analog and Digital SPDIF (TOSLINK).
The product provides two audio inputs (analog and digital). Users can select which audio to embed in
the HDMI output. It can be the same as the original HDMI audio (pass-thru), SPDIF digital, or 3.5mm
L/R analog.
Advanced EDID management allows users to control the video portion as well as the audio part of the
EDID. The EDID presented to the video source connected to the HDMI input can pass from the
downstream device or emulate an EDID from internal memory. The device can also “Learn” the EDID
connected to its HDMI output.
The product has a video bandwidth of 18 Gbps and supports resolutions up to 4K @ 60 Hz 4:4:4 with
HDR. It supports HDCP 2.2 as well as HDCP 1.4 if needed.
The device has the ability to generate and output a blank HDMI signal with audio embedded even if
there is no HDMI input; often referred to as “HDMI Audio Bridging”. This is a convenient means to
distribute audio only signals over an HDMI network.
The HD-AUD-IO has a configurable digital input terminal that can mute the audio and/or video.