Lumagen Radiance 2144/2124 - Manual (Page 31)

Section 6 – Audio Configuration
Copyright 2009-2014 Lumagen, Inc. Radiance 2124 and 2144, Rev 051514 23
Section 6 – Audio Configuration
The Radiance video processor supports the HDMI 1.4 audio formats. This means that Dolby Digital
TrueHD™ and DTS Master-Audio™ “bitstream” formats are available.
By default the audio EDID from the device connected to HDMI Output 1 is passed back to all source
devices. There are two methods that can be used to change this. Typically the audio menu ( MENU →
Audio) is used to program the audio EDID mode. For most cases the audio menu is all that is needed to
setup the audio EDID. However, in some cases a specific input, or input memory, may need to use a
different audio EDID. In this case the audio EDID for each input memory can be changed ( MENU → Audio
→ Audio EDID settings).
Introduction to the Audio Menu
The Audio menu configures the Audio EDID reported back to HDMI sources and is independent of the
Video EDID mode. In addition it selectively enables audio outputs based on the specified conditions. Many
common system configurations can use the default Audio mode settings. Some examples of these are:
• HDMI television (with audio) connected to HDMI Out 1
• HDMI receiver connected to HDMI Out 1 and (non-audio) display connected to HDMI Out 2
• HDMI receiver connected to HDMI Out 1 with a display connected to the receiver’s HDMI output
• SPDIF receiver connected to COAX Audio Out and (non-audio) display connected to HDMI Out 2.
NOTE:
1. Associating an audio input w ith a video input is done using the Input menu
MENU → Input → Audio Setup → Source → (audio source) → OK.
2. The Audio EDID mode is independent of the Video EDID mode.
3. For best sw itching, and pow er-on, times manually you can manually select the
output resolution and select “USER1 EDID” for the audio mode. For example, for a
1080p60 display pressing MENU 0 2 7 OK selects 1080p60 and eliminates the need for
the Radiance to read the display video EDID. Selecting “Alw ays”, and “USER1 EDID” in
the Audio menu eliminates the need for the Radiance to read the audio EDID
information from the AVR/ TV. See the Output Configuration Commands section, and
Audio section, for more information. Remember to save any changes.
4. When using the COAX SPDIF audio output, the audio EDID should
be set to “Alw ays USER1 EDID” in the main audio menu.
Some important concepts for selecting the audio configuration are:
• Audio can be routed to one or both of the HDMI outputs, and/or the COAX output with the
appropriate limits on the output format. For example, the digital COAX audio output can only carry
2-channel PCM, Dolby Digital, and DTS.
• HDMI audio EDID reported back to the HDMI sources can be passed-back from either of the two
HDMI outputs, passed back from the common elements of the two outputs (i.e. only features
supported by both outputs are enabled), or specified by the user (User EDID).
• The audio EDID reported back to sources can change dynamically, as configured by the user,
based on which HDMI output has active video, and/or audio EDID selected in the input memory.
NOTE: Some sources update their EDID information only when they are powered on, or do not
properly reread EDID when the HDMI Hotplug signal is toggled. If you have a source that reads
EDID only at power-on, or does not respond properly to Hotplug, a single EDID mode should be
used (e.g. select “always report user EDID” as described below).
• Selecting “User1 EDID” is the recommended practice. This allows the Radiance to report the EDID
back to the HDMI sources even when the display or receiver is turned off. However, in this case,
care must be taken to select only audio modes that the audio processor supports.
• Default “User EDID” mode is 2-channel PCM and Dolby-Digital 5.1 only. The user can change the
“User EDID” to include any audio modes supported by the Radiance and the audio processor.
• You can over-ride the global Audio EDID for a particular HDMI input by selecting MENU → Input
→ Audio Setup → Audio EDID → Custom → OK. Set the audio modes to “Y” (yes) that you
want to report back the source for that input.
• Audio is muted when changes are detected on the input. Some audio receivers need to be muted
longer to avoid noise. MENU → Input → Audio Setup → Mute Control → Long → Ok