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Re: How many devices are supported in aggregate device ?
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Re: How many devices are supported in aggregate device ?


  • Subject: Re: How many devices are supported in aggregate device ?
  • From: Jeff Moore <email@hidden>
  • Date: Wed, 24 Mar 2010 10:07:07 -0700

The practical upper bound is memory and CPU usage. As long as there is enough of those resources, you should be able to aggregate as many devices as you want.

That said, USB does have a bandwidth ceiling that will limit the number of devices you can attach to one port on the Mac.


On Mar 24, 2010, at 5:49 AM, LŽeopold Frey wrote:

> I'm not sure if it's the correct list to post this question but I suppose that by knowing the inner code of the coreaudio API, you'll be able to answer my question.
>
> For an art installation prototype, I've succesfully and (very easily) managed to aggregate 4 cheap usb soundcards to the built-in one to create a 10 output device.
>
> Now I want to expand my prototype and before going further I wonder if there's a limit in the number of devices the coreaudio API can deal with ? can aggregate ?
> Also, is there a limit in the number of usb device I can connect to a single port ? (let's suppose they're connected through several self-powered usb hubs).


--

Jeff Moore
Core Audio
Apple


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