User:BillWharrie/Device and Input selection on Mac

From Audacity Wiki
< User:BillWharrie
Revision as of 07:21, 13 December 2010 by Galeandrews (talk | contribs) (Comments on Mac vs. Win Vista/7 differences)
Jump to: navigation, search
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
This page will be deleted when this discussion is finished.

This also relates Bug 11

Mac G5 Dual 2 GHz 10.5.8

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

iMac Intel Core 2 Duo 2.0 GHz 10.4.11

1) The choices in Devices Toolbar:
IMacDeviceChoices.jpg


2) When "Core Audio: Built-in Microphone" is selected as the input Device, the Input Selector is active but has only one choice:
IMacInternalMic.jpg


3) When "Core Audio: Built-in Input" is selected as the input Device, the Input Selector is active but has only one choice:
IMacLineInput.jpg


4) When "Core Audio: USB Audio CODEC" is selected as the input Device, the Input Selector disappears:
IMacUSBInput.jpg

Note: This iMac has S/P-DIF optical inputs and outputs, however it appears that the "Digital Input" option is not displayed unless an optical digital device is connected.

PowerBook G4 1.67 GHz 10.4.11

1) The choices in Devices Toolbar:
PowerbookDeviceChoices.png


2) When "Core Audio: Built-in Input" is selected as the input Device, the Input Selector is active and has the following choices:
PowerBookInputChoices.png


3) When "Core Audio: USB Audio CODEC" is selected as the input Device, the Input Selector disappears:
PowerBookUSBDevice.png

Observations

Although the iMac and PowerBook are running 10.4.11, the "Built-in" inputs are handled differently. This could be down to different sound hardware in the two machines. The iMac uses an Intel chipset, while the PowerBook uses a TI chipset.

While the display of the Input Selector on the iMac when only one choice is available may be non-optimum, I don't think it rates a P2 bug designation.

  • Gale:13Dec10: What you see on iMac in Device Toolbar (aggregation of <built-in Device> with <built-in input>) is exactly what happens on Windows Vista/7; the difference is in the Mixer Toolbar selector which here is visible with an indication of what the current selection is, as opposed to Vista/7 where it's either absent or shows something meaningless like "Master".

    I think the different skill level on Windows, the XP > 7 migration situation and the fact that no Win Vista/7 users at all will be able to select inputs in a new Audacity installation with the initial interface suggests a higher rating for the problem on Windows than Mac. The daily questions about this from Windows users when there is already targeted FAQ and Wiki help bears this out.

    Maybe if the input selector was always there on a new Windows installation, it could be given a tooltip, but there is no guarantee there will be an input selector.