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Fwd: CoreAudio and Vendor ID and Product ID of a sound device
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Fwd: CoreAudio and Vendor ID and Product ID of a sound device


  • Subject: Fwd: CoreAudio and Vendor ID and Product ID of a sound device
  • From: Matthias Hänel <email@hidden>
  • Date: Mon, 19 Oct 2015 09:41:17 +0200

Hey Paul,


thanks for your fast answer.
I am not sure what you are trying to tell me :)

You don't seem to believe it is a good idea in general.

Well, some of our competitors do exactly this behaviour.
I think it is good to have a solution like this since many of our users
are not quite fimiliar with any technical stuff, they just want to play
music. That's why automatic selection is a good idea from my point.

I also have a fireface 400 here :) This is one good example where channel detection
is always successful. I believe the overall problem is wrong firmware.

regards
Matthias


>> Am 15.10.2015 um 13:25 schrieb Paul Davis <email@hidden>:
>>
>> On Thu, Oct 15, 2015 at 3:29 AM, Matthias Hänel <email@hidden> wrote:
>>> Hey Brian,
>>>
>>>
>>> thanks for your fast answer.
>>>
>>> You are right Apple almost delivers an option for the final solution :)
>>>
>>> I am quite sure there is not.
>>>
>>> The main goal of this procedure is to setup the sound device settings
>>> without user interaction. Some or even many sound devices come with more than one stereo channel.
>>> This setting is not always correctly detected by Core Audio. The user has to go to
>>> "Audio-MIDI-Setup" and has to select the correct Output-Mode like "quadrophonic" or higher.
>>>
>>> I know that I can force this setting by software and therefore I have to know which sound device
>>> is attached. Well, we have to have a big list with VID/PID and speaker-modes, but that would be
>>> sufficient even for native supported soudn devices and MIDI controllers.
>>
>> To be honest, I think this is a fools errand.
>>
>> There are MANY devices with large numbers of channels. The way these
>> devices are connected to speakers is not defined anywhere. You can
>> also forget jack-sensing and stuff like that. Even sitting right next
>> to me is a fireface 400, with 18 channels of output. You have no idea
>> how this is wired up in my office/studio, and there's nothing you can
>> do to find out except ... ask me.
>>
>> the "output modes" in audio/MIDI setup have essentially nothing to do with this.
>


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