Effect Patch; Digital I/O Connector; Drop Format; Dim Function - Roland VM-C7100 Owner's Manual

Digital I/O connector

On this system, refers to the digital audio input/output connectors
of the processor. There are two: DIGITAL A (coaxial), and
DIGITAL B (XLR connector). DIGITAL A can be connected only to
the S/PDIF compatible digital input/output jacks found on many
types of audio equipment, and DIGITAL B can be connected only
to the AES/EBU compatible digital input/output jacks found on
some professional audio equipment.
When a separately sold VM-24E is installed, three 8-channel bi-
directional digital I/O connectors (R-BUS connectors) will be
added. This allows the system to be connected to Roland devices
that have the same connector, or to digital multitrack recorders
made by other companies, so that multi-channel digital audio data
can be transferred.
* Digital connections with a multitrack recorder made by another
manufacturer will require a DIF-AT (sold separately) in addition to
installing a VM-24E. (p. 234, p. 247)
S/PDIF
Coaxial
R-BUS

Dim function

A function that lowers the monitor sound to a previously specified
level. On this system, the [DIM] button located on the console is the
on/off switch for this function. It can also be set to turn on
automatically while the talkback function is being used.

Direct box (DI)

A relay device, usually built into a box, that is used when
connecting an electric guitar or bass to a mixer. (The Boss DI-1 is an
example.) It lowers the output impedance of the instrument to
match the receiving device, and simultaneously can convert an
unbalanced signal into a balance signal. By using a direct box, you
can avoid problems such as attenuated signal level, increased noise,
and tonal change that can occur due to mismatched impedance.
Impedance
Unbalanced connection
Balanced connection

Discrete circuit

A circuit constructed of individual transistors, resistors, and
condensers, rather than being integrated as an IC (integrated
circuit) chip.
Display
Refers to the display screen located on the front panel. The display
device used by this system is a 320 x 240 pixel LCD, which displays
various information depending on the functions that are selected.
Distance
One of the parameters of a mic simulator, which specifies the
distance between the mic and the sound source, and thereby
changes the frequency response and time delay. It also simulates
the "proximity effect" (the boost in low frequency that occurs when
a mic is brought nearby the singer's mouth).
Distortion
An effect that distorts the sound, and is used mainly on electric
guitars. On this system, it is included in the guitar multi algorithms.
Similar effects include Overdrive (p. 241) and Metal (p. 239), and
these will each produce differing degrees of distortion.
Dither
When a digital audio signal is transmitted or received, and the bit
resolution of the receiving device is lower, the lower bits of the data
are discarded. "Dither" refers to the digital processing that is
performed at this time to avoid the loss in audio quality that can
occur in particular at the end of notes. This system implements a
dithering function.

Drop format

One of the formats (frame rates) of SMPTE time code. At the
expense of time code continuity, this format is designed to avoid
any discrepancy between SMPTE time and real (clock) time that
would otherwise be caused by the fact that NTSC format is actually
29.97 frames/second.
SMPTE time code
Frame rate
NTSC format
DSP
An abbreviation for Digital Signal Processing. Technology that uses
dedicated circuitry or software calculations to process digitized
audio or video signals in order to implement the functionality of a
mixer, filter, or effect processor. By extension, DSP is also used to
collectively refer to effect devices and effect functionality that uses
such technology.

Dynamic microphone

A type of microphone that uses the same principle as an electrical
generator. It operates without a power source. The most common
types (moving coil) are quite durable, and are widely used as vocal
and instrument mics. Ribbon mics are a different type of dynamic
microphone that have superior acoustical characteristics, but are
somewhat less durable.
Dynamics (effect)
Effects that compressor expand the range of volume changes. These
effects are used to reduce noise when recording to tape, or to
increase the dynamic range of a tape or wireless mic. Dynamics
effects provided on this system include Enhancer, Expander,
Compressor, and Limiter.

Effect expansion board

An optional circuit board that can be added to a product. Effect
expansion board (VS-8F2: sold separately) can also be installed in
this system to increase the number of effects that can be used
simultaneously.

Effect patch

A state or settings that specifies an effect, stored under a number or
name. By recalling an effect patch you can reproduce the state of the
effect at any time. The "effect library" on this system corresponds
to what are called "effect patches" on some devices.
Library

Effect processor

A device that adds an acoustical effect such as reverberation,
distortion, or modulation. This system contains a built-in effect
processor, and separately sold VS-8F2 (effect expansion) boards
can be added to increase the number of processors. This manual
may refer to the "effect processor" simply as "effect."
Glossary
235