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Re: How to capture the audio of an output device in OSX
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Re: How to capture the audio of an output device in OSX

  • Subject: Re: How to capture the audio of an output device in OSX
  • From: Paul Davis <email@hidden>
  • Date: Wed, 10 Sep 2014 09:18:00 -0400


On Wed, Sep 10, 2014 at 9:09 AM, Admiral Quality <email@hidden> wrote:
Just curious then Paul. Why does my pro-sumer Edirol UA-1000, as well
as every other USB and Firewire audio interface I've ever used, work
as full duplex in applications? (Wouldn't be much good if it didn't!)

please read what I wrote:
 
> Perhaps you are not aware that since the switch to Intel, Apple has *never*
> presented the builtin audio chipset as a single duplex device. Thus
> applications that have duplex behaviour have to either handle two different
> devices or use an aggregate **if they want to use the builtin audio
> chipset**.
>
> Pro- and prosumer (in fact, almost any USB or Firewire) audio interfaces do 
> not behave this way - they appear as single duplex-capable devices.

i.e. the only common device that does NOT work in duplex mode is the builtin device whose driver was written and is maintained by Apple. there is no technical reason that i know of for this decision, and in old PPC apple systems, the builtin device was also duplex.
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  • Follow-Ups:
    • Re: How to capture the audio of an output device in OSX
      • From: Ed Wynne <email@hidden>
References: 
 >How to capture the audio of an output device in OSX (From: claudio santoro <email@hidden>)
 >Re: How to capture the audio of an output device in OSX (From: Frederic De Jaeger <email@hidden>)
 >Re: How to capture the audio of an output device in OSX (From: Zack Morris <email@hidden>)
 >Re: How to capture the audio of an output device in OSX (From: Paul Davis <email@hidden>)
 >Re: How to capture the audio of an output device in OSX (From: Dodo <email@hidden>)
 >Re: How to capture the audio of an output device in OSX (From: Paul Davis <email@hidden>)
 >Re: How to capture the audio of an output device in OSX (From: Admiral Quality <email@hidden>)

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