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by nodesocket 1829 days ago
Sorry, but what’s AES67?
2 comments

Audio over IP - you see it being used with (for example) theatre setups between a processor and powered speakers that take it as an input.

You can (if you are sufficiently well-heeled) use it for home theatre with e.g. a JBL Synthesis 55 and Genelec or Meriden digital speakers.

(Unfortunately, everything in the AV space is fucked up by the copyright cartel, so processors aren't allowed to send anything beyond 24 bit/48 kHz outside their core processing path.)

I never expected to see JBL Synthesis mentioned on HN by anybody else... Are the Synthesis preamp/processors sending out digital audio now? When I was consulting for them the processors exclusively sent analog, usually over XLR, even for Atmos. But the SDEC EQ stage used 96kHz internally, then could send digital audio to the amp over Blu link.

I still use the SDEC EQ and Blu link for audio distribution in my house.

Yeah, the 55s have added AES/Dante output with the caveat it has to be downsampled because HDCP. That said, 24 bit/48 kHz to the speaker is into placebo territory.
a protocol for audio over IP
This is LAN audio streaming right? Like the kind of thing you'd use at a venue. Not internet radio.
Yes, AES67 (like Dante) is geared towards low latency over reliable links. Tipically wired ethernet.
venue audio seems to be the main thing, yes. (Some companies seem to push it for automotive audio distribution too, but I have no idea if any car makers actually are going down the "Ethernet everywhere" train that far)
Yeah if you want real security use AES256 instead ...
No, that's not for security, that's for multi-channel 3.1 (256/67=3.x). So you can stream a L+C+R+LFE. More bass for your face with that sub.