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