Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.
Download on the App StoreAudiobus is the app that makes the rest of your setup better.
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Got one, thanks!
Are you sure the problem is not in Plectrum?
I just tried your Drift session, but didn't have plectrum so substituted it with Zeeon with a short plucky sound. After 250 bars still no drift..
See if you can replicate it with Zeeon or some other instrument known to handle timestamps correctly.
@j_liljedahl Okay, i‘ll try the two sessions using Zeeon.
Plectrum is a very simple free AUv3 with a noice burst feed into a resonator.
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The „drift session“ still drifts after i exchanged Plectrum for Zeeon:
The „no drift“ session with Zeeon is not showing drift.
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Speculating: Do you store the bpm as float ? How is that comunicated to the AUv3 midi plugins ? Maybe in one case it‘s 120.005 shown as 120.0 but riffer adjusts to the precicse bpm value ? (There can only be drift, if bpm and play-start is the sole reference used. I assume that x0x sync to bar/beat/whatever send by AUM.
Regarding the X0X instances. I do hope that that 808-timing is disabled in the settings...
@Samu Yes, the 808 timing is disabled in all instances/ sessions.
The main mystery to me is, why is the session based on ocelots original session drifting every time i try it, while the other build from scratch isn‘t.
I just got more and more confusing.:
No change to tempo, link or buffer settings. Superweird.
I can record a sceen-recording if there is disbelief, but since the whole round takes ≈20mins i would need to cut it shorter in lumafusion or let you skip in boring „wait for bar 140“ parts of the YT video
Wow, so complicated.
It's so much cleaner just to route the plugins to record audio out to two channels panned left and right, then look at the recorded output in an audio editor.
@_ki - I would test but I don't have the apps in question. I'm only relating how I've tested before.
That's a good one.
Which App is a good player to compare against?
It's a 64 bit float, yes. But then, if you double tap the tempo adjuster and write "120" manually, it should be exactly 120. Do you still get drift after this?
I will investigate when I find some dev time, but I can't think of anything related that's saved in the session file except tempo. And that would survive a session Clear! Very weird indeed.
Also interesting that I couldn't reproduce it. This iPad is stuck on 48kHz, yours?
This is an interesting thread. I have actually noticed timing inconsistencies with EG Pulse. It adds a little bit of swing that I sometimes appreciate and sometimes do not. I think if I ever go back to beatmaking, I’m going to have to choose a different drum sampler.
Already tried that, but it didn‘t fix the drift (even first changed to 50.0 and then back to 120.0 using that tempo dialog). Toggling link didn‘t change the drift of that specific session.
My iPad Pro 10.5 / IOS 14.8 device runs at 44.1kzh.
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Could anyone else reproduce the drift behavior (or is it just me with the ‚infective‘ AUM session from ocelot ) .
@ocelot Did you try to restart AUM and build a sync test session from scratch on your device and does this fresh session also drift ?
Well done. A great developer supporting another great developer to solve a problem. What a forum.
I use Rozeta XOX, with 808 timing disabled, and the app to be tested driving two Ruismakers with the same preset and the same pad. Or two hammerheads with the same sample. Atom 2 could be used as well, as I think it is sample-accurate. I just fire it off after appropriate cleanup and reboot of the iPad, and come back 30 minutes later to scan the results. Simple and effective.
Great, many thanks!
I will test this tomorrow, also again Xequence...
I also wanted XOX to drive different Pads, but was not able to find a way to do this😅😅😅
Different pads? I don't understand.
Yes. The AUM session ("Riffer + Playbeat Drift") attached to my earlier post was created 2 years ago.
I now use this process:
Tests today and yesterday: After ~40 bars, I can clearly hear Riffer>Spectrum start to drift in timing, both before and after AUM's metronome, at 44.1kHz only, with 512 buffer - in AUM only. And it gets worse as time marches on.
The timing issues aren't apparent in AUM at 48kHz, or in Audiobus or apeMatrix at either 44.1kHz or 48kHz.
Tomorrow Later this week: I'll use a MIDI monitor and also record the audio output from AUM's metronome and Riffer>Spectrum.
Notes: The timing issues with the Audiomodern and Cem Olcay MIDI apps isn't as bad as many Windows apps, so as a workaround I record up to 8-bar audio, but I'd like to record 16+ bars without sloppy timing.
Test Setup: 2018 iPad 6th Gen; 2017 iPad Pro 10.5; iPadOS 15.2 (both iPads); Storage Space: 20GB/45GB+ remaining; Audio: Internal iPad audio, Sample rate: 44.1kHz; no external peripherals used while testing.
I don’t know if this true, but a developer recently told me that some of the 44.1khz capable iPads are really running at 48k … and the OS returns some strange buffer timestamps when they run at 44.1k but not at 48k
Yes something like this could be it. Did you try 48k @ocelot ?
Yes. The timing issues aren't apparent in AUM at 48kHz, or in Audiobus or apeMatrix at either 44.1kHz or 48kHz.
I see, ok! That’s weird. Does Riffer have any hardcoded assumption of 44.1k, or buffer size, @Audiomodern ?
And I’d like to understand why it happens only in AUM, but only with some sequencers. @Audiomodern Are you using current beatPosition from the host sync struct to determine time, or something else?
I just added some notes and wanted to direct the MIDI to another pad in Ruismaker.
But that does not seem to be possible - you just need to directly select another instrument in X0X.
I was seeking a way to configure MIDI port / channel for that and could not find something liek this.
In short: Ignore my strange question 😅
You can change the midi note sent for each instrument in XOX. So, for instance to trigger pad 2 from the BD instrument, just change the note from 49 to 51. Use the icon that looks like a star on a circle at lower left corner of the app.
Oh.
That was the only button that I did not try, as it looked like Favorites (because of the star).
A bit too fast 😅
Fantastic, many thanks!
I released a new update for SnakeBud today. I’ll update the rest during next few weeks. I’m also working on a new generative sequencer as well. Anyways, hope the update fixes the problem, let me know!
Update is live, thanks for this!
@cem_olcay Cool, thanks for working on that problem 👍🏼
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Could someone else please do a sync test with snakebud and check the sample-offset eith MIDI Monitor, as i don’t own it ?
@Audiomodern @cem_olcay thank you for addressing this. That is awesome news! 👍
@cem_olcay added sample accurate timing to SnakeBud
Thank you man. Love your apps. Cheers!
You da man, man.