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 Store

Audiobus is the app that makes the rest of your setup better.

Which iPad? iPad 2018 (32GB) VS iPad 2018 (128GB) VS iPad AIR 2019 (64GB)

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Comments

  • StudioESStudioES
    edited May 2019

    Nice! Congrats! The A12 is a beast.

    At very high CPU loads with very low audio latency buffers, the A12 outperforms the A10 by ~100%. At moderate CPU loads with high buffers, both the A12 and A10 perform similarly.

    With the A12 and A12x, if you need very low buffers when using the headphone jack (gigging musician or drummer, etc.), load up the CPU a bit since you'll get crackling with only 1 synth loaded, or bypass the system audio/headphone jack and use an external audio interface instead.

    Real-World Usage Tests Updated 4/29/2019:
    apeMatrix@512 (Mini 5 @48kHz vs iPad 6 #2 @44.1kHz vs Mini 2 @44.1kHz):
    Watching the CPU for 1 minute (CPU Min/Max):
    Preset StepBudDixieRozRuis: Mini 5: 18-22%; iPad 6: 10-14%; Mini 2: 11-16%.
    Preset StepBudDixieiDensityKosmoRozRuis: Mini 5: 24-36%; iPad 6: 17-24%; Mini 2: 17-27%.
    Preset FugueCalityAparilloParticlesKronecker: Mini 5: 13-41%; iPad 6: 17-21%; Mini 2: 29-35%.
    Preset CyclopRuisNoirAxonDedalus Jam 01: Mini 5: 11-15%; iPad 6: 12-18%; Mini 2: 41-46%.
    Preset ThesysDixieStepBudElsaFuguePrimer: Mini 5: 15-46%; iPad 6: 17-23%; Mini 2: 26-40%.
    Preset StepBudDixieAparilloAxonNoir: Mini 5: 13-16%; iPad 6: 17-21%; Mini 2: 44-60%.
    Preset StepBudDixieNoirRozTrouble: Mini 5: 13-40%; iPad 6: 16-21%; Mini 2: 22-30%.
    Preset RozX2AparilloX2SampleriPulsaretNoir: Mini 5: 25-44%; iPad 6: 25-29%; Mini 2: 76-85%.
    Preset Modular MIDI Mayhem: Mini 5: 11-17%; iPad 6: 9-21%; Mini 2: 27-53%.

    AUM@1024 (Mini 5 @48kHz vs iPad 6 #2 @44.1kHz vs Mini 2 @44.1kHz):
    Watching the CPU for 1 minute (CPU Min/Max):
    Preset Fugue_iceWorks+Dixie+Ruis: Mini 5: 29-44%; iPad 6: 25-33%; Mini 2: 36-44%.
    Preset Roz_Heaviest Synths 3: Mini 5: 19-30%; iPad 6: Deleted Preset/Couldn't Test; Mini 2: 57-109%.
    Preset Roz_Noise+Heaviest Synths: Mini 5: 27-40%; iPad 6: 35-55%; Mini 2: 88-118%.
    Preset Roz_Sugar Bytes 4: Mini 5: Deleted Preset/Couldn't Test; iPad 6: 25-31%; Mini 2: 49-69%.

    BM3@1024 (Mini 5 @48kHz vs iPad 6 #2 @44.1kHz vs Mini 2 @44.1kHz):
    Watching the CPU for 1 minute (CPU Min/Max):
    48kHz Samples Only+Bark Filter AU on Main Out: Mini 5: 18-23%; iPad 6: 10-25%; Mini 2: 14-22%. Without Bark Filter: Mini 5: 2-5%; iPad 6: 1-6%; Mini 2: 2-3%.
    44.1kHz Samples Only: Mini 5: 2-4%; iPad 6: 1-5%; Mini 2: 1-3%.

    Stress Tests Updated 4/29/2019:
    Audiobus 3 stress tests while watching its CPU meter for 4 minutes, noting only peaks, not averages (except for CPU Min/Max for the last iPad 6 #2 tests). The Pro 11's CPU averages lower than the rest, with the Mini 5 slightly higher. Pro 11 and Mini 5 have more frequent CPU spikes. Opening synth GUIs doesn't noticeably impact the Mini 5's CPU usage, except for Quanta, where the CPU peak usage rose from 36% to 76% @256@48kHz. This is strange because when testing the 2018 iPad 6 at [email protected], opening Quanta was fine (only opening Cyclop or Aparillo resulted in crackling), so Quanta's GUI appears to have issues with the A12 iPads.

    Audiobus 3 Preset: 'CPU 110': 5 Rozetas driving 4 of my heaviest AUs (Cyclop+Aparillo+Quanta+Synthmaster One) + Ruismaker.
    2013 Mini 2: [email protected], CPU peaks @231%. Non-stop crackling; GUIs slow + unusable.
    2013 Mini 2: [email protected], CPU peaks @188%. Non-stop crackling; GUIs slow + unusable.
    2013 Mini 2: [email protected], CPU peaks @135%. Non-stop crackling; GUIs slow + unusable.
    2013 Mini 2: [email protected], CPU peaks @116%. Frequent crackling; GUIs slow + unusable.
    2013 Mini 2: [email protected], CPU peaks @107%. Frequent crackling; GUIs slow + unusable.
    2018 Pro 11: 64@48kHz, CPU peaks @56%. No crackling; GUIs smooth + useable.
    2018 Pro 11: 1024@48kHz, CPU peaks @32%. No crackling; GUIs smooth + useable.
    2018 iPad 6: [email protected], CPU peaks @122%. Occasional crackling, especially with Cyclop+Aparillo GUI open, other synths OK; GUIs smooth + useable.
    2018 iPad 6: [email protected], CPU peaks @55%. No crackling; GUIs smooth + useable.
    2018 iPad 6: [email protected], CPU peaks @38%. No crackling; GUIs smooth + useable.
    2019 Mini 5: 64@48kHz, CPU peaks @52%. Occasional crackling, but only with Quanta GUI open, other synths OK; GUIs smooth + useable.
    2019 Mini 5: 128@48kHz, CPU peaks @38%. No crackling; GUIs smooth + useable.
    2019 Mini 5: 256@48kHz, CPU peaks @36% (76% with Quanta GUI open). No crackling; GUIs smooth + useable.
    2019 Mini 5: 512@48kHz, CPU peaks @29%. No crackling; GUIs smooth + useable.
    2019 Mini 5: 1024@48kHz, CPU peaks @26%. No crackling; GUIs smooth + useable.
    2018 iPad 6 #2 [email protected], CPU Min/Max @43-114%. Occasional crackling, especially with Cyclop+Aparillo GUI open, but no CPU spikes, other synths OK; GUIs smooth + useable.
    2018 iPad 6 #2 [email protected], CPU Min/Max @29-79%. No crackling; GUIs smooth + useable.
    2018 iPad 6 #2 [email protected], CPU Min/Max @28-52%. No crackling; GUIs smooth + useable.
    2018 iPad 6 #2 [email protected], CPU Min/Max @32-46%. No crackling; GUIs smooth + useable.
    2018 iPad 6 #2 [email protected], CPU Min/Max @21-39%. No crackling; GUIs smooth + useable.

    Stress Tests Updated 4/30/2019:
    2019 Mini 5:
    apeMatrix 128@48kHz, 10x iPulsarets all using the default patch 'Factory-Sky Instr (Def)', all playing a 7-note chord; apeMatrix CPU meter 49-56% over 2 minutes. No crackling; UIs smooth. That particular preset uses the Trainlet as its grain source.

    Using a Sample as the grain source, with all 10x iPulsarets using the patch 'ape_periodic-1', all playing a 7-note chord; apeMatrix CPU meter 41-58% over 2 minutes. No crackling; UIs smooth.

    2018 iPad 6:
    apeMatrix [email protected], 10x iPulsarets all using the default patch 'Factory-Sky Instr (Def)', all playing a 7-note chord; apeMatrix CPU meter 63-84% over 2 minutes. No crackling; UIs smooth. That particular preset uses the Trainlet as its grain source.

    Using a Sample as the grain source, with all 10x iPulsarets using the patch 'ape_periodic-1', all playing a 7-note chord; apeMatrix CPU meter 49-53% over 2 minutes. No crackling; UIs smooth.

    2013 Mini 2:
    apeMatrix [email protected], 10x iPulsarets all using the default patch 'Factory-Sky Instr (Def)', all playing a 7-note chord; apeMatrix CPU meter 81-187% over 2 minutes. Non-stop crackling; UIs slow. That particular preset uses the Trainlet as its grain source.

    Using a Sample as the grain source, with all 10x iPulsarets using the patch 'ape_periodic-1', all playing a 7-note chord; apeMatrix CPU meter 89-166% over 2 minutes. Non-stop crackling; UIs slow.

  • dendydendy
    edited May 2019

    @ocelot wow impressive list of test cases, respect !

  • gonekrazy3000gonekrazy3000
    edited May 2019

    @amarok said:
    For the past 4 years I’ve used an Air2 128g, which has served me well but is starting to struggle with the CPU loads I’m asking from it. So this week I got a new (2017/18) 10.5” iPad Pro 512g, along with the Apple Pencil and the SmartKeyboard. This is the last iPad (and only iPad Pro) to include a headphone jack, as well as the faster screenrateX (important for drawing in Procreate) and the performance has been great; I have already smoothly run through several huge projects that made my Air2 choke & spit.

    I know this model isn’t on your list, but I am very glad to have found one, as it is being phased out by the new models, and has seen prices reduced. Grab one while you can, I live near NYC, and my local Apple store did not have any more - the surprised Apple employee actually went online and found the last one at a local BestBuy, but I think they are going fast.

    The air3 has a headphone jack. So does the mini 5. So your iPad isn't the last iPad to have a headphone jack.... Also one thing to consider is the higher framerates screen actually uses more CPU. So the both the mini 5 and the Air3 can actually outperform the 10.5 pro in audio use.

  • gdhgdh

    I used GarageBand today switching btn a Radias, Prophet 08 and Fantom X6 as controllers today. For some reason it took awhile for the midi to work but all good. Once I plugged the power into the USB to Camera 3 adapter it has worked since whether powered or in battery mode. I’ve been using Apple products since the 90’s but never tried GBand. Only issue I had was with a brass Performance patch that I had set up on the X6 that had 6 layers. When used with Brass Ensemble in GB it would drop notes, only patch to do this with.

  • [Deleted User][Deleted User]

    @gonekrazy3000 said:

    @amarok said:
    For the past 4 years I’ve used an Air2 128g, which has served me well but is starting to struggle with the CPU loads I’m asking from it. So this week I got a new (2017/18) 10.5” iPad Pro 512g, along with the Apple Pencil and the SmartKeyboard. This is the last iPad (and only iPad Pro) to include a headphone jack, as well as the faster screenrateX (important for drawing in Procreate) and the performance has been great; I have already smoothly run through several huge projects that made my Air2 choke & spit.

    I know this model isn’t on your list, but I am very glad to have found one, as it is being phased out by the new models, and has seen prices reduced. Grab one while you can, I live near NYC, and my local Apple store did not have any more - the surprised Apple employee actually went online and found the last one at a local BestBuy, but I think they are going fast.

    The air3 has a headphone jack. So does the mini 5. So your iPad isn't the last iPad to have a headphone jack.... Also one thing to consider is the higher framerates screen actually uses more CPU. So the both the mini 5 and the Air3 can actually outperform the 10.5 pro in audio use.

    ProMotion does not always mean higher framerate, it can also adjust the framerate to as low as 24Hz

  • LinearLinemanLinearLineman

    @Roy... I looked at Tympani Free. It is by far the best tympani sound on iOS. And the rolls made by dragging your finger are great. Three sets of Tymps, too.

    Too bad there is no connectivity, though. you could pipe it from one iPad to another using an AI I am guessing. Anyone know how one would do this?

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