Core Machine (Operating system/System info/Roon build number)
NUC 7I7BNKE with Rock 1.0 227
Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)
TEXT GOES HERE
Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)
Laptop WIN 10 latest build via HDMI to receiver (Stereo)
Media PC Origen AE S16T BluCinema linked via HDMI to Oppo 205 (Surround)
Denon AVR 4520 via AirPlay (Stereo)
OPPO 205 RAAT analogue to Denon AVR 4520 (Stereo)
All PC,s and laptops have the Latest Roon version 610
Description Of Issue
since the latest update Roon no longer recognizes Quad files as 4.0 but as “Other”.
During playback the down-sampling doesn’t work any longer despite the Signal path showing that it does.
The Down-sampling as mentioned in your Knowledge Base therefore is no longer working.
The multi-channel world is a graveyard of false-starts and obsolete technologies, plus a lot of video/movie specific schemes that aren’t very relevant in an audio-only environment like Roon.
Most musical content produced recently is either in either 2.0, 5.0 or 5.1. There is a small amount of 7.1, too, and a small amount of Quadrophonic content. Compared to these four formats, practically everything else qualifies as exotic in an audio/music context.
Channel mapping for 2.0, 5.0, 5.1, and 7.1 is straightforward, since each larger layout simply adds channels to the previous one. In these cases, Roon matches up the channels from the source material with the channels on the output device and fills any unused channels with silence.
Quadrophonic content is handled slightly differently:
When playing Quad content to a 5.1 channel layout, the rear channels from the content will be mapped to the corresponding surround channels in the 5.1 layout. When playing Quad content to a 7.1 channel layout, the RL and RR channels in the Quad content will be mapped onto the RL and RR channels in the 7.1 layout"
When playing to a Stereo zone the Surround channels of the Quad files are not audible.
when playing to a 7.1 zone the Surround channels are no longer mapped to the Surround back channels as described in your Knowledge base.
This only concerns Quad eg. 4.0.
The other Surround formats are still working fine.