Apple Logic Pro 8 - Manual (Page 1001)

Glossary 1001
VU meter Abbreviation for Volume Unit meter. An analog meter used to monitor audio
levels.
WAV, WAVE The primary audio file format used by Windows-compatible computers. In
Logic Pro, all recorded and bounced WAV files are in Broadcast Wave format, which
includes high-resolution timestamp information that stores positional information. This
makes it easy to align these files in other audio and video applications.
waveform A visual representation of an audio signal. Waveform graphics run from left
to right, and are centered on a horizontal line. Louder portions of the waveform
(amplitude peaks) are indicated as taller spikes or higher curves in the waveform.
wet/dry mix Refers to the ratio of a signal that effects have been added to (wet), and
the original, unprocessed signal (dry).
window type Status of the window as a float window or a normal window. Float
windows always float in the foreground and can not be hidden by normal windows.
Also see float window.
Word Clock Clock signal required by digital audio interfaces to ensure the sampling
rates of connected devices run synchronously. When two devices are connected via a
standard digital audio interface (such as S/P-DIF or ADAT optical), Word Clock is
transmitted via the audio circuit. If you want more than two digital audio devices to
communicate with each other, you will need to use separate Word Clock ports for
synchronization, in most cases.
word length See bit depth.
XG Extended General MIDI standard from Yamaha, compatible with Roland GS.
zero crossing A point in an audio file where the waveform crosses the zero amplitude
axis. If you cut an audio file at a zero crossing there will be no click at the cut point.
zoom An action that enlarges (zooms in on) or shrinks (zooms out from) the display in
a Logic Pro window. The Zoom tool, and the zoom controls found in the lower left and
upper right corners of windows, are both used for zooming tasks. Also see zoom
control and zoom level.
zoom control The control that appears at the bottom right of some windows, such as
the Arrange. The zoom control slider allows you to navigate through the entire length
of the currently displayed project. The lines on the left and right of the slider can be
clicked to zoom in and out by a fixed percentage.
zoom level The amount that window contents (tracks and regions, for example) are
magnified. Zooming in to a high level allows you to make more precise edits.
Conversely, you can zoom all the way out to see the entire project and work on very
large sections.