![]() The Pro Tools Audio Bridge virtual devices which come preinstalled have a built in clocking mechanism which custom virtual devices don’t have so these should be used where possible.Īux I/O is one of those developments which will have a huge impact on the uses people put Pro Tools to. Reported performance is apparently very good but it’s important to understand the difference between the Playback Engine I/O and Aux I/O.Ĭlocking and preventing drift can be achieved for interfaces using conventional clocking if available but for virtual devices this isn’t possible. Latency might vary between passes and it even has its own Ignore Errors During Playback Setting. Aux I/O doesn’t inherit these characteristics and should be seen as complementary to your Playback engine. The Playback Engine offers reliable performance with delay compensation and, depending on the particular playback engine, low or negligible latency. Pro Tools users will no longer have to compromise their Playback Engine’s performance by creating Aggregate Audio Devices to incorporate additional hardware, though it should be said that there is no delay compensation on an Aux I/O and additional latency will be introduced on the Aux I/O, though in practice this is minimal, dependant on buffer settings. See how this works in practice in this short video. If MIDI is routed from Pro Tools to MainStage via the IAC Driver, previously inaccessible Logic virtual instruments can be used within Pro Tools, or at least driven from MIDI in Pro Tools, with audio routed back into Pro Tools via Aux I/O. For example it’s possible to route outputs from MainStage directly into Pro Tools and MIDI from Pro Tools into MainStage. Presets are provided in the form of the Pro Tools Audio Bridge - Virtual Devices of various channel widths from 2 to 64, which are pre-installed and ready for use, but the advanced user can of course set up their own, though the sync performance using the pre-installed Pro Tools Audio Bridge is better than that which can be achieved using custom Aux I/O.Ī good place to start would be to route audio from an alternative audio application into Pro Tools. Using The Pro Tools Audio Bridge To Route Between Apps You can roundtrip audio to and from software applications, it just requires setting up two separate core audio devices to avoid creation potential feedback loops. Aux I/Os can be given custom names in the I/O setup, one limitation to be aware of is that while hardware can act as both an input or an output, virtual devices have to be either an input or an output. To see how this works watch this short intro video from AvidĪccess to Aux I/O is from the I/O Setup window where a new button opens a window in which new paths can be set up which can access both hardware and virtual devices such as the Dolby Audio Bridge or Dante Virtual Soundcard. The choice has been to use HDX or run natively but if you wanted to combine Core Audio and HDX things got more complicated. Pro Tools HDX users will be aware of how well the HDX/Hybrid audio engine works but also how it can be very awkward to incorporate other hardware or Core Audio devices with it. Pro Tools, unlike most DAWs, has a single setting for the Playback Engine which controls both the inputs and outputs. This is very significant as it allows Pro Tools to access other hardware and applications other than the currently selected Playback Engine, something which required various workarounds to achieve in the past. It allows you to have your primary Playback Engine set up to your preferred setting and still be able to stream to and from other Core Audio devices. This is because it relies on access to Core Audio. It’s technical but it’s extremely powerful and addresses some persistent pain points which have dogged certain users for a long time.Īux I/O is a Mac-only feature, available on Big Sur or later. What Is Aux I/O?Īux I/O allows you to add any Core Audio device as extra inputs and outputs to your current Playback Engine. This article will help us appreciate what Aux I/O can do and what limitations it has. I don’t think we’ve even imagined all the ways Aux I/O is going to be useful! However it does take more than a sentence to explain what it is and what it does. ARA 2 integration with Melodyne is going to be incredibly useful, but only for doing one thing. Aux I/O is the new feature of Pro Tools 2022.9 which is hardest to explain but it’s going to be the gift that keeps giving in terms of opening up new ways of using Pro Tools.
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