1 # using hdmi0 for TV stereo, hdmi1 for a 5.1 speaker set-up
2 # unfortunately, a non-square speaker number creates some noise
3 # therefore for hdmi1 we declare 8 speakers, but re-map them to 6 speakers
28 # upmix stereo to 5.1 – so we can watch stereo YouTube on all speakers
29 # with this: $ chromium-browser --alsa-output-device=stereo51
30 # (numbers taken from <https://www.volkerschatz.com/noise/alsa.html>)
51 # default to hdmi0, overwrite with AUDIO_HDMI=1 env prefix