8

432 Glossary
event Individual MIDI command, such as a note on command. Continuous controller
movements (modulation wheel, for example) produce a quick succession of individual
events—each with an absolute value.
expander An effect process that increases the dynamic range of an audio signal. It is
the antithesis of the compression effect (see compressor).
export To create a version of a file, such as a Logic Express project, in a different format
that can be distributed and used by other applications.
filter effect Filters are effects designed to reduce the energy of a specific frequency
within a signal. The names of the individual filters illustrate their function. As an
example: A lowpass filter allows frequencies that are lower than the cutoff frequency
to pass (see cutoff frequency).
filter slope The filter slope is the steepness, or severity, of filter attenuation (level
reduction). As examples, a filter slope of 6 dB per octave would sound much softer than
a filter slope of 12 dB per octave.
FireWire Apple trademarked name for the IEEE 1394 standard. A fast and versatile serial
interface, often used to connect audio interfaces, and audio processing units to
computers. FireWire is well suited to applications that move large amounts of data, and
can be used to connect hard disks, scanners, and other kinds of computer peripherals.
There are two versions of FireWire: FireWire 400 and FireWire 800. The latter is a faster
variant, which uses a different connector type. Use of FireWire 400 devices on a
FireWire 800 port is possible with suitable cabling, but it effectively halves the
bandwidth to all devices on the port (also see M-LAN).
flanger The flanger effect is similar to the chorus effect, where a slightly delayed signal
(which is shorter than that of the chorus) is fed back into the delay line input. Flanging
makes a sound thicker, and slightly out of phase.
float window See window type.
frame Unit of time. A second in the SMPTE standard is divided into frames that
correspond to a single still image in a video file or on video tape.
Freeze function The Freeze function performs individual offline bounce processes for
each frozen track, saving almost 100% of the CPU power used for software instruments
and effect plug-ins. All plug-ins of a track (including software instrument plug-ins, if
applicable, along with all related automation data) are rendered into a freeze file.
frequency The number of times a sound signal vibrates each second, measured in
cycles per second, or Hertz (Hz).