Hi,
Actually my case is same as yours HDMI and DAC (Hifiberry) RPi3..
The addon is interesting, I will check it out.
Nevertheless Did I undersand right that you did not solved the pulseaudio issue at all? Or you at least found what causes the "echo"?
Anybody else had /resolved the same issue?
it works for me
my /storage/.config/autostart.sh :
pactl load-module module-udev-detect
pactl load-module module-combine-sink slaves=alsa_output.0.hdmi-stereo,alsa_output.3.iec958-stereo
however I have 2 problems
1) playing video create sometimes echo artifacts (crackling) on hdmi output
2) playing spotify plugin librespot? causes lagging / pitch during palyback
Not sure if this is pulseaudio problem or HW is just too weak to send audio to 2 sinks.. (RPi3)
anyone knows?b
