ETH-68 delivers 3.6 ms round-trip audio latency over Ethernet for Linux
ETH-68: Ethernet Audio Interface for Linux
ETH-68 is an Ethernet audio interface for Linux that achieves 3.620 ms round-trip latency at 48 kHz with a 64-sample buffer, matching RME's HDSPe AIO Pro PCIe card and surpassing it by 0.33 ms at 96 kHz. It offers 6 balanced inputs, 8 balanced outputs, MIDI, and scalable multi-unit synchronization via a shared clock and UDP sync. It works with JACK and PipeWire.
eth68 matches the latency performance of the RME card at 48 kHz and surpasses it by 0.33 ms at 96 kHz.
- inatreecrown2
I would love this and am actively looking for a unit for my linux setup but: why the limit on sample rate? why not also support 44.1 kHz ?
How am I supposed to master for CD, which is still something people do?
- jhallenworld
How does the receive side recover the transmit side's sample clock? There is a BNC for clock sharing between "multiple units", but I'm not sure if that's used / required between transmit and receive.
Or is there no such synchronization, in which case there would be long-term drift?
- purpleidea
If this had open source firmware, I think I know a lot of people who would be interested, but I can't seem to find out if that's true or not and where to buy one.
- Neywiny
Far be it from me to discourage an H7 build, but I do question the codec choice. It's far from top of the line and it's not like the design is tight on space. TI offers much better (almost 20 dB SNR more on the ADC). Maybe a gen 2 could benefit from a better codec.
- oger
Is the hardware and software open source? Is there a link to a repo that I have missed?