Create aggregate sound device mac

What's the different between them?

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Recording from Multiple Devices on Mac and Windows – Donya Quick's Website

The Mac Mini is also connected to a 2. Given this setup I managed to get the audio to work, first by creating a multi-output device, then I realised that most guides mention using an aggregate device, which I am not sure I understand what it really is. Is there really a difference, if so what's the right way to achieve audio output through multiple devices?

Aggregation has a lot of applications in music production where you might want to use more than one audio capture device at the same time from Logic Audio or GarageBand. To do this, you aggregate devices in to one new, virtual device and access the single device from within Logic. How would I do this? I would create a new, multi-output device. Assign both my Built-In Output and AirPlay sources to this device and then select it as my output device for audio on my iMac. Now audio played in iTunes goes to both my iMac's speakers and my AppleTV at the same time -- it's mirrored.

Use an Aggregate Device with Apple music creation software

Let's say I wanted to record 4 streams of mono audio at the same time but all I have are two audio input devices that each have 2 mono streams on them they're basically stereo capture devices. I could create an aggregate device out of the two devices assuming their drivers support aggregation in OS X and use this new, aggregate device in GarageBand or Logic and now, instead of seeing 2 channels of input, I'd see 4 channels of input and the devices would function as one, bigger "virtual device".

It works in a similar fashion for their outputs. They all act as independent outputs on one virtual device. By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies.

Home Questions Tags Users Unanswered. Ask Question. A multi-output device allows you to mirror audio output to multiple devices at the same time. Some examples might help illustrate the difference. These instructions are for Windows Roughly the same thing can be done on Windows Vista, 7 and 8, but not earlier versions of Windows. This is the general goal for the setup:.

You have a couple of options if you need to use your external audio interface rather than relying on your built-in sound chip:. However, I have not tested this strategy with a USB mic myself yet. Your email address will not be published. Currently you have JavaScript disabled. In order to post comments, please make sure JavaScript and Cookies are enabled, and reload the page.

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Click here for instructions on how to enable JavaScript in your browser. Recording from Multiple Devices on Mac and Windows. Last modified: Dec 31, This is the goal for the audio configuration that the instructions below describe: Setup instructions: Any program making use of sound needs to be fully exited, not just minimized. Otherwise, changes in your audio devices may be ignored or your audio may quit working altogether.

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Do not restart them until after you are done setting up. Set your headphones volume the way you want it before you continue. Configure for Multi-Output Device to send to the built-in output and Soundflower 2ch. While viewing the Input tab, make some noise on the microphone and on whatever program is connected to Soundflower to verify that the volume meter responds appropriately.

You should see the volume meter respond clearly to both sources. Set your recording program to take input from the Aggregate Device.

Recording from Multiple Devices on Mac and Windows

Note that audacity requires 4 channels of input for this. Skype settings.

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  • Audacity settings. If you only hear one of the two input devices, there are two main possibilities: The volume of one of the devices is set too low, or the other is too high and drowning it out. Your recording program may not be mixing down input from both devices.

    Using Multiple Audio Interfaces Simultaneously [Creating an Aggregate Device]

    Some software, like Skype, are able to mix down the channels automatically to combine the respective left and right channels.