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80 Appendix B Audio and MIDI in Mac OS X
Note: Reduce the level setting of your amplification system when adjusting the
volume, to avoid any speaker damage.
Audio MIDI Setup (AMS)
Apple’s Audio MIDI Setup application is integrated into the operating system. The AMS
application is found in the Applications/Utilities folder.
Note: You may find it useful to move the AMS application into the Dock.
As AMS mirrors the parameters of the Sound preference pane (except for Sound
Effects), it should be used for almost all adjustments to your audio interface settings.
The AMS application is useful for choosing a default setting for your Core Audio
hardware. You will require this default setting for all audio applications (iTunes, for
example) that are incapable of directly selecting a setting. For more capable audio
applications, such as Logic, it is possible to set all parameters from within the host
itself.
Note: The appearance of the AMS application may vary, dependent on the version of
Mac OS X in use.
Core MIDI
MIDI data is handled by the Core MIDI system of Mac OS X. Compatible MIDI
interfaces—used to connect MIDI keyboards, fader units, or external sound
generators—are recognized and activated automatically.
The MIDI Page of AMS
The AMS application offers a MIDI page that displays all installed MIDI interfaces, and
make connections between them, if necessary. Logic recognizes all MIDI devices
(including MIDI sub-channels) set up in AMS, and displays these in the Library when an
external MIDI track is selected or created.