User:BillWharrie/Device and Input selection on Mac

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Warning icon This page is a demonstration of the interaction between Device selection and Input selection on Mac. Specifically how the Input Selector on the Mixer Toolbar reacts to different device selections.
I'll talk about the Device Toolbar, but selections made in Devices Preferences, Recording, Device are the same.
Screenshots and discussion are of 1.3.13-alpha December 9 2010 on a Mac G5 running OS X 10.5.8. As far as I know this behaviour is consistent across 10.4.x to 10.6.x.
This page will be deleted when this discussion is finished.

This also relates Bug 11

1) When selecting "Core Audio: Built-in Audio" in Device Toolbar, the Input Selector in Mixer Toolbar is active and selectable.
BuiltInAudioInput.png


2) When selecting anything other than "Core Audio: Built-in Audio" in Device Toolbar, the Input Selector in Mixer Toolbar disappears.
USBAudioInput.png

I think this behaviour is reasonable. All devices other than Built-in Audio have no input choices. So it makes sense for the Input Selector to go away. At one point it was greyed out, but a decision was made that it was better for it to disappear.