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Ideally this should work out of the box. But JACK Timebase is, unfortunately, not a good standard. It has massive loop holes, like not being able to handle tempo changes properly (be aware of that) and due to a missing reference implementation or test suite there are various sorts of little bugs in a lot of client applications. Those in Hydrogen I tried to tackle for the upcoming release in #1977. Could you check whether you have to same issues using this version? (It corresponds to the latest commit of branch
No. Both modes should work. If not its a bug and we will (try to) fix it. That said, Master mode tells Hydrogen not to listen to external time signals and to just send them. There is a lot less things that could go wrong in there. But again, non-Master should work too.
This is one of the little things that make JACK Timebase really hard to support. When checked (at least at the time I read their code for debugging) Ardour won't be Timebase Master at all times. This is not how this protocol works. It only makes Ardour discard external time signals (and maybe tells it to periodically attempt to register as master again).
Yes. That's how I would use it too. |
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I'm not sure which case you're referring to. In v1.2.3, there's no offset at all, assuming they're in sync. See the webm; they're out of sync until 16 seconds, when a Rewind in Hydrogen gets them in sync. Sorry if the video's choppy. From then on, until I desync them, I expect Hydrogen to be exactly where Ardour is regardless of tempo or about anything else. If the tempo in Hydrogen and Ardour don't match, the individual drum sounds will be faster or slower than usual, but they start where they're supposed to and the timeline is where it should be. In the AppImage version, I can get Hydrogen's timeline to jump to where Ardour's currently is, and the tempo always matches Ardour's. So if Ardour is playing, and I jump in Hydrogen to Ardour's current position, now they'll be together in time until I change something. But if I pause or jump around the timeline in Ardour, Hydrogen doesn't care and will keep right on playing as normal.
Right.
I'm running Arch with kernel Linux 6.10.10-zen1-1-zen x86_64. I use the Ardour version in the official Arch repositories, currently v8.6.2.
I've found Ardour to be pretty stable on my setup. I imagine it's come quite a long way since v3. But if it couldn't get past the splash screen maybe it's very dependent on the setup. If you want to try to reproduce my setup, here's a list of the packages I've installed. Dependencies aren't shown but Arch's package manager is smart enough to grab them if you install the list. Certainly you could get more information and faster versus having me test with a logging version, but it sounds like a lot of effort to set up Arch for this. If you want to give me an AppImage with logging enabled I'd be happy to test it. I also realized I haven't messed around with different time signatures. I'm not sure what impact that'll have. Are you aiming to have the code for v1.2.4 frozen in the next few days? I can put in a half hour here and there on weeknights, but I may not be able to really dig deep until the weekend. Thanks for the support on this. I just did my first legitimate songwriting session today and it blew me away how important the drums I sequenced in Hydrogen were. This is fantastic software. |
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This indicates a so-called XRun event. Meaning the audio engine was not able to process its audio in time and JACK discards the content of Hydrogen's audio buffer for that processing cycle.
NIce. I by no means want to discourage its usage.
Thank's a lot. I'll do in a couple of days.
No. I mean, the sooner the better. But we are in not in a hurry and quality and stability is a lot more important for us. In addition, I'm currently working on another issue for 1.2.4 as well.
Similar for me. But I have less time during weekends :D |
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What's up with Arch Linux? Haven't used it in a while. They do not feature a graphical installation anymore? One has to write a |
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I installed something like a couple years ago and it's definitely a slog to set up. I can't remember if there was a GUI at the time but I opted to stick close to the Arch Wiki install guide, which is all command line. From what I can remember, going through the critical steps here was enough to get the computer functional enough that when I installed KDE Plasma, everything else was easy to set in a GUI. But I think I was working from home at the time, so god knows how many hours it took to actually do that. If you can get the info you need if I run an AppImage with logging please do send one over. I imagine the total man hours with that approach will be something like 10% of what it will take for you to get a working Arch install up. |
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Don't worry. We just have to deal with JACK and an another JACK client in here. Other distributions should yield the same results. I just set up a new AV Linux machine with Ardour running. First thing I noticed is that Ardour does neither send JACK positions nor does it start/stop JACK transport out of the box. In the upper left part there is a button reading |
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I'm noticing some weirdness when I try to use Ardour as the JACK timebase master. When JACK is not connected, is the master, or is "out of sync", Hydrogen works independently. I can play a song or loop a pattern and use my MIDI synth to add drums on top of it, with or without recording them.
But when Hydrogen is slaved to Ardour and they're "in sync", Hydrogen's MIDI-In LED lights up when I press a synth key, but I don't get any audio out. It also sounds like the drum track is doubled. It's certainly much louder. Sample attached; in the first part, Hydrogen is in sync. In the second part, it's out of sync.
Take8_Drums-1.1.mp4
To clarify what I mean about in vs. out of sync, I can have Ardour playing and dictating the time with Hydrogen in song mode, but if I switch to Pattern mode, Play, then back to Song and Play, they're out of sync and hydrogen doesn't care what's going on in Ardour. There are other patterns of messing with Pattern/Song mode and Play/Stop that will desync them.
I don't want to file this as an Issue because I might be misunderstanding something, being new to this software. Is there a way to have Hydrogen be the slave in song mode and still be able to throw in additional drums on top of what's being played? Is the doubled drums normal? Would it be better to use Hydrogen as the master as suggested here? That feels unnatural to me because I see Ardour as the center of the setup - everything should eventually feed into Ardour.
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