Show HN: AES67 Stream Monitor – An app to monitor audio over IP streams

https://aes67.app/

by phlhar • 5 years ago

84 23 5 years ago

aes67.app

nodesocket• 5 years ago

Sorry, but what’s AES67?

detaro2• 5 years ago

a protocol for audio over IP

tootie• 5 years ago

This is LAN audio streaming right? Like the kind of thing you'd use at a venue. Not internet radio.

rodgerd2• 5 years ago

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.)

nitrogen• 5 years ago

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.

frabert4• 5 years ago

Very nice! Can you link some resources regarding how to implement AES67? What kind of latencies are you able to achieve?

rectang2• 5 years ago

FWIW, there's a resources page with a number of links that match your inquiry: https://aes67.app/resources

Unfortunately the standard itself you have to buy. It's 50 USD for non-AES-members.

https://www.aes.org/publications/standards/

frabert4• 5 years ago

Yes, that's the reason I was asking :( A number of projects implement it, but I'm not an AES member and didn't feel like spending the 50USD for the official specs. I was hoping someone had made a writeup of the overall protocol.

phlhar• 5 years ago

A draft of the standard that is as far as I know pretty much complete can be found online on the AES website: https://www.aes.org/standards/comments/drafts/aes67-r-171107...

rectang2• 5 years ago

Rad, it's MIT-licensed open source!

https://github.com/philhartung/aes67-monitor

monkeydust• 5 years ago

Somewhat related trying to find software that can record whatever source I am sending to my speakers, like virtual audio driver. Any ideas ?

stemcc• 5 years ago

Pipewire has got virtual sinks ootb now.

GormHouj• 5 years ago

voicemeeter for windows is really good, highly recommend.

imiric• 5 years ago

ffmpeg does this (and a thousand other things). For Linux and PulseAudio:

  ffmpeg -f pulse -i alsa_output.pci-0000_00_1f.3.analog-stereo.monitor -c:a libopus -b:a 128k capture.opus

Virtual streams are also supported natively by PulseAudio, so you can do some simple mixing of inputs/outputs, in which case you'd specify a different -i value above.

Sidenote shoutout to PulseAudio. It's really come a long way and things just work nowadays, including high bitrate Bluetooth codecs. I haven't had the need to try something else like Pipewire.

LinuxBender• 5 years ago

This is very cool. I am curious if the maintainers could sync up with the folks that wrote Ampache [1] so people could use the two of them together, for those that stream their catalog locally using aes67.

[1] https://github.com/ampache/ampache

sackerhews• 5 years ago

In similar category but for playing music together, check out Jamulus and Ninjam.

https://jamulus.io/

https://cockos.com/ninjam/

Show HN: AES67 Stream Monitor – An app to monitor audio over IP streams

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