6.0

Glossary
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Glossary
ADAT: Abbreviation for Alesis Digital Audio Tape. The
ADAT (supported by Alesis, Studer, and Fostex) is a digital
multitrack cassette recorder with eight audio tracks using
an S-VHS video tape, with 16 or 20 Bit quantization. The
optical port allows the parallel transmission of all eight au-
dio channels.
Aftertouch: Also known as pressure. MIDI data-type gener-
ated by pressure on keys after they have been played.
There are two types; channel aftertouch, whose value is
measured by a sensor stretching along the whole keyboard
and whose data apply to the whole MIDI channel, and
polyphonic aftertouch (rare) which is individually mea-
sured and transmitted for every key.
AIFF: Abbreviation for Audio Interchange File Format.
Data format for audio files in the Macintosh operating sys-
tem.
Autodrop, Auto Punch: Automatic drop-in recording with
adjustable drop-in/out positions.
Bar ruler: Ruler at the top edge of the screen, divided into
bar units.
BBS: Abbreviation for Bulletin Board System. An elec-
tronic mailbox.
Catch: Function for making the section of the song cur-
rently displayed in the window reflect the current song po-
sition.
Cha: Abbreviation for channel or MIDI channel
Check box: A small box. Placing a check in it (by clicking
on it) activates an option.
Click: Metronome, or metronome sound.
Clock: Electrical synchronization impulse, transmitted ev-
ery 1/96 note. Was used in older drum machines before
the advent of MIDI. (i.e. MIDI Clock).
Controller, control change: MIDI data type, e.g. for sliders,
pedals, switches or standard parameters like volume and
panning. The type of command is encoded in the first
databyte, the value in the second databyte.
Count-in: Beats which sound prior to the start of a record-
ing.
C-Press: Channel pressure or aftertouch.
Cueing: Monitoring while fast-forwarding or rewinding.
Cycle: Function which constantly repeats the passage be-
tween the locator positions.
Data bytes: These define the content of a MIDI message.
The first data byte represents the note, or controller num-
ber; and the second the velocity, or controller value.