Apple Logic Pro 9 - Manual (Page 1322)

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 that 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 Pro. 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 Pro when recording, arranging, and editing audio files,
and when creating a mix.
LFO Abbreviation for Low Frequency Oscillator. An oscillator that delivers modulation
signals below the audio frequency range—in the bandwidth that falls between 0.1 and
20 Hz, and sometimes as high as 50 Hz or 400 Hz.
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 Pro 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 Pro.
1322 Glossary