10.6

1168Logic Pro User Guide
allpass filter A filter that allows all frequencies to pass, providing only phase shift or
phase delay without appreciably changing the amplitude characteristic.
amplifier A device that increases the level of a signal. Sometimes called amp for short.
alternative A different version of a project, with a unique name and different settings.
Alternatives are saved as part of the project, and share the same assets. Alternatives for
the current project appear in the File > Alternatives submenu.
amplitude A term used to describe the amount of a signal. If you have an audio signal,
amplitude refers to the volume of the sound, measured in decibels (dB).
amplitude peak The loudest point of an audio signal.
analog signal Refers to audio data that consists of an endlessly varying voltage level.
Analog signals must be digitized, or captured, for use in Logic Pro. Compare digital.
anchor point The start point of the audio file that an audio region is based on. See also
Audio File Editor.
AppleLoops Prerecorded audio or MIDI regions commonly used for recurring rhythmic
musical elements or elements suitable for repetition. AppleLoops contain tags so you can
quickly locate files by instrument, genre, or mood in the Loop Browser. Audio Apple Loops
also contain transients that are used by Logic Pro for time-stretching and pitch-shifting
tasks.
articulationWhen playing sampled instruments that emulate real instruments, you can
switch between the unique playing techniques called articulations. Each articulation is
identified with a unique Articulation ID. Information regarding available articulations is
stored in Articulation Sets, which are saved both as part of a patch and with a project.
Articulation Set EditorThe Articulation Set Editor can be used to create sophisticated
key switch and controller switch definitions, and define output transformations, enabling
compatibility with third party sample libraries. You can also create Articulation Sets
for instruments that have assigned Articulation IDs, but do not have pre-configured
articulations, using the Articulation Set Editor.
ASCII Acronym for American Standard Code for Information Interchange. A standard
computer character set, allowing computers to deal with text characters. When you type
ASCII characters on the keyboard, the computer interprets them as binary so they can be
read, manipulated, stored, and retrieved. See also scan code.
attack The start phase of a sonic event. Also part of an envelope. See also envelope.
attenuate The act of lowering the level of an audio signal. See also boosting and cutting.
audio channel strip A channel strip in the Mixer, used as a target for audio tracks in the
Tracks area. All data on the audio track is automatically routed to the audio channel strip
that was assigned in the Tracks area.
audio file Any digital recording of sound, stored on your hard disk. You can store audio
files in the AIFF, WAV, Sound Designer II (SDII), and CAF formats in Logic Pro. All recorded
and bounced WAV files are in Broadcast Wave format.
Audio File Editor The area in Logic Prothat allows audio files to be destructively edited and
processed in a number of ways. The Audio File Editor allows editing of individual samples
within an audio file, and also provides access to a number of special sample processing
tools. In earlier versions of Logic Pro, the Audio File Editor was called the Sample Editor.