Apple Logic Pro 9 - Manual (Page 1333)

SDII Sound Designer II audio file format. Very similar in structure to the AIFF file format.
search field In many Logic Pro windows you find a field with rounded corners and a
magnifying glass to the left. This field allows you to perform text searches. As examples,
the search fields in the Key Commands window or Loop Browser.
self-oscillation Self-oscillation is a typical characteristic of analog filter circuits. It occurs
when the filter, at high-resonance values, feeds back into itself and begins to oscillate at
its natural frequency.
semitone Smallest interval between two pitches in the standard diatonic scale, equal to
a half tone. A semitone is also called a half step or half tone.
send Abbreviation for auxiliary sends. An output on an audio device used for routing a
controlled amount of the signal to another device. Sends are often used to send several
signals to the same effect, which is useful for computationally intensive effects such as
reverb.
Send slot A panel shown on mixer channel strips that enables you to send (via a bus) a
portion (or all) of the audio signal to an auxiliary channel strip. You may use multiple
sends on channels.
sequencer A sequencer is these days considered to be a computer application that allows
you to record both digital audio and MIDI data and blend the sounds together in a
software mixing console. In earlier times, a sequencer controlled synthesizers via a series
of control voltages and gates, or via MIDI only. No audio recording or control was available.
setting 1) A parameter value. 2) A set of plug-in parameter values that can be loaded,
saved, copied, or pasted via the Settings menu. A plug-in setting is also known as preset.
Also see preset and Settings menu.
Settings menu Found in the gray header at the top of all plug-in windows. Allows you
to save, load, copy, and paste settings: the parameter values of effects and software
instruments.
sharing Channel strip settings, plug-in settings, and key commands can be stored and
accessed (shared) on a local network or MobileMe account.
shelving EQ EQ type that allows the frequency range above or below the specified
frequency to be increased or decreased.
side chain A side chain is effectively an alternate input signal—usually routed into an
effect—that is used to control an effect parameter. As an example, you could use a
side-chained track containing a drum loop to act as the control signal for a gate inserted
on a sustained pad track, creating a rhythmic gating effect of the pad sound.
Signature List A Logic Pro window that lists all time and key signatures of a project.
1333 Glossary