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Glossary 443
stereo Short for stereophonic sound reproduction of two different audio channels.
Compare with mono.
subframe A sub-division of a SMPTE frame, corresponding to the individual bits of a
SMPTE frame. One frame consists of 80 bits.
sustain pedal A momentary footswitch that is connected to MIDI keyboards. It
transmits MIDI controller number 64, which is recorded and played back by
Logic Express.
Swing parameter Alters the rigid timing of a quantization grid by delaying every other
note of a specified sub-division by a definable amount.
synchronization Method of keeping several recording or playback devices time locked
with one another. In virtually all synchronized setups, there will be one master device
and one or more slave devices that derive their synchronization clock from the master.
synchronizer Central unit used to control the synchronization of several devices.
synthesizer A device (hardware or software) that is used to generate sounds. The word
is derived from early attempts with mechanical and electronic machines to emulate (or
synthesize) the sounds of musical instruments, voices, birdsong, and so on.
Logic Express features several software synthesizers, including the ES1, ES2, EFM1, ES E,
ES P, and ES M.
SysEx Abbreviation for System Exclusive data. SysEx data forms the top tier in the
hierarchy of MIDI commands. These messages are tagged with an identification
number for each manufacturer (the SysEx manufacturer ID number). The actual
contents of these MIDI commands is left to the manufacturer. SysEx data is often used
to transfer individual (or banks of) sound programs or system settings, or to address
individual sound generation or signal processing parameters.
takes A take, put simply, is a recording. Logic Express allows you to create several
takes, one after the other, without leaving record mode. These takes can then be
compiled into a super take (see comping).
template A project that contains settings and preferences that you have defined.
Templates serve as a starting point for new projects (scoring tasks, audio only projects,
MIDI only projects, and so on, as your personal needs require). Any project can be used
as a template, and you can create and save multiple templates.
tempo The playback speed of a piece of music, measured in beats per minute.
tick The smallest unit of timing resolution in a MIDI sequencer. In Logic Express, this is
1/3840th of a note. Logic Express can go down to single sample accuracy (at sufficient
zoom levels) for edits and positioning, but the MIDI protocol is not fast enough to
support this.