User guide

Glossary 1011
interleaved audio file Logic Express handles multi-channel (stereo) audio files as
interleaved. Edits to interleaved files affect both channels equally. Also see split channel
audio files.
key The scale used in a piece of music, centered around a specific pitch. The specified
pitch is called the root of the key. Can also refer to a black or white key on a musical
(MIDI) keyboard.
key command Function which can be executed by pressing a specific key (or key
combination) on your computer keyboard or MIDI controller.
Key Commands window The Key Commands window is used for the assignment of
key commands to computer keys or to MIDI messages.
key focus The selected, active window, is said to have key focus in Logic Express. Many
key commands will only function when a window has key focus. The Inspector also
updates to reflect the parameters of a window with key focus.
latency You may notice a delay between playing your keyboard and hearing the
sound. This is a form of latency. A variety of factors contribute to latency, including the
audio interface in use, audio and MIDI drivers. One factor under your control, however,
is the I/O buffer size, which is set in the Devices preferences.
legato Method of musical performance that smoothly connects one note to the next.
level meter A meter that monitors audio input or output levels to or from your
computer. You use the level meters in Logic Express when recording, arranging, and
editing audio files, and when creating a mix.
Library Window (or tab in the Media area of the Arrange window) used to handle all
settings files for channel strips, effects, and instruments.
Link button Button in the top left corner of most Logic Express windows that features
the chain link icon. It controls the linking between different windows.
Lists area Area in the Arrange window, providing four independent tabs that show a
listing of the following types of data: events, regions, markers, tempo changes, and
time/key signatures.
local menu bar Menu in a window that only contains functions that are relevant to
that particular window.
Local Off mode Operating mode on a MIDI keyboard where the keyboard does not
directly play its own integrated sound generator. This is useful when using it as a
master keyboard for Logic Express.