GarageBand: Aggregate Device


GarageBand: Aggregate Device



Make sure Finder is active by clicking on its icon in the Dock repair 1

Open a new Finder Window
repair 2

Select "Utilities" from the "Go" Menu
repair 3

Find Audio MIDI Setup utility, and launch it

Once AMS is open, choose "open aggregate device Editor" from the audio menu.
agg 1

And you'll see a window like this

Press the agg 3 button, and a new aggregate device is created.

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Double click the highlighted text, and enter a new name for your aggregate device. I'm going to name mine with the three devices I intend to use so that it will be easy to see of what this virtual device consists. This might be important if I were to create several different aggregate devices for different purposes at a future date.
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Press return.

Now we can select the devices that we wish to add to our Aggregate Device.
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Notice that the iMic is listed twice, First as an output device, and then as an input device. Since we're creating an input device, we're only interested in the latter.

One important note to mention is that all the devices have to have the same sample rate to work together. In the case of GarageBand that means a 44.1K sample rate (See: Setting Sample Rates and Bit Depth)

Click the agg 7 button, and you can quit Audio MIDI Setup.

Now we are ready to make use of our new aggregate device in GarageBand. Open GarageBand's preferences.
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Click the agg 9 tab, and select your new aggregate device from the input popup menu

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When GarageBand asks you...
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Choose "Yes", wait a moment for the drivers to initialize, and now you can use any of the channels your Aggregate Devices consists of for multi-track recording.



Mac Topics That May Interest You:


Audio Units Modules (AU) In GarageBand   Installing A New AU In GarageBand?


Using A New Audio Unit Instrument in GarageBand   GarageBand Aggregate Device


How To Use A New Audio Unit In GB    SoundFlower Configuration  


Adding Audio Units Modules (Instruments) to GarageBand (Step by Step)

VST & Audio Units Plug-ins in Mac OS X   SM Pro Audio VFX Software for Intel Mac OS X

How to setup Garage Band, Sound-flower, IAC, VFX     Apple's Boot Camp

IAC (Inter-Application Communication) Bus     Audacity VST Enabler

WACVST (Windows-Mac VST)     VSTAU Manager (VST to AU Adapter)

How To Use Soundflower      How to capture audio with Soundflower


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