Right #RPi (broadcaster) reads input audio, writes it to speakers, and broadcasts over Wi-Fi. Left RPi (receiver) receives audio from Wi-Fi, listens on the mic, and plays received (higher-quality) audio in-sync with what it hears on mic.
In this setup, laptop runs #signalestimator that writes probe impulses to broadcaster input and reads outputs of broadcaster and receiver to measure sync error.
I will be at the 7th ECREA Radio and Sound Section Conference (6-8 September) to talk about #FunkWhale as the #Fediverse alternative to centralised commercial #AudioStreaming services like #Spotify.