Long story short, I’m trying to hook up my steam deck to an external audio system so that someone can put on headphones and listen to people speaking in microphones around a court room. I do have my deck in desktop mode and already have it set to headphone audio even while docked, but I’m not sure how to get the external audio source to be picked up and played through the Deck.
This may just be me missing something I should know about Linux, but any help is appreciated.
So there’s an audio system that only offers HDMI audio out and you want to connect that to your Deck to listen from there?
You’ll need either an HDMI capture card or a digital HDMI audio extractor (not sure if these exist). The capture card would capture the “video” and then you can just listen to the audio stream from that, or the digital HDMI audio extractor would connect to the HDMI and pass the audio through a USB connection to the Deck (TBH I only know of analog audio extractors that offer a 3.5mm audio jack and not a USB connection so the Deck wouldn’t even be needed for that).