Yamaha 02R Version 2 Manual page 385

290 Glossary
02R User's Guide
Bit—A single unit of digital data. It can have a value of 1 or 0.
Bulk Dump—A MIDI function that allow the transfer of system specific
data, such as sample files or mixer settings, between MIDI capable devices.
The data are transmitted as MIDI System Exclusive messages.
Bus—A circuit that connects the input or tape and effect return signals with
the output connectors. The 02R has eight output buses plus the stereo
output.
Channel Library—An area in 02R memory used to access and store
channel settings—stored as programs. There are 96 user programs for you
to store your channel settings.
Compander—A compander is a compressor/expander—a combination of
signal compression and expansion. The compander attenuates the input
signal above the threshold as well as the level below the width. For very
dynamic material, this program allows you to retain the dynamic range
without having to be concerned with excessive output signal levels and
clipping. See Dynamics Processor.
Compressor—A compressor provides a form of automatic level control. It
attenuates high levels, thus effectively reducing the dynamic range,
making it much easier to control signals and set appropriate fader levels.
Reducing the dynamic range also means that recording levels can be set
higher, therefore improving the signal-to-noise performance. Limiting is an
extreme form of compression, where the output signal is sharply
attenuated so that it cannot exceed a particular level. See Dynamics
Processor.
Confidence monitoring—Listening directly from a recording medium to
ensure the program material is being recorded correctly. Most analog
recorders have a playback head trailing the record head, allowing you to
hear the material directly after it has been recorded. Professional DAT
recorders usually have four heads for confidence monitoring, as do a
number of the modular digital multitrack recorders. Hard disk recorders
offer their own form of confidence monitoring.
D/A converter—The conversion of a digital data stream into analog
signals. The digital word is buffered and then converted into an analog
signal. After conversion, the analog signal is usually processed through a
smoothing filter which removes the step transitions between the digital
words. The 02R uses 20-bit linear digital-to-analog converters for most of
its analog outputs
DAT cassette—Metal chrome cassette tape (thickness 13 m, width 8.8mm).
Delay—A delay applied to the input signals processed by the 02R to
compensate for signal processing delays, for example caused by the gap
between the record and playback heads of a multitrack recorder.