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

aes67.app

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

#21
post #7
post #4

Earlier quoted context omitted.

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.

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)

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

#22

Sorry, but what’s AES67?

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.)

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

#23

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

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.

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

#24
post #22

Sorry, but what’s AES67?

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/…

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.

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

#25
post #22

Earlier quoted context omitted.

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/…

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.
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