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ABSTRACT
The REV-] is a professional digital reverberator with 1 input and 2 outputs.
Various
reverber-
ation effects
can be added
to original
sounds
by allowing
early reflectoins
and subsequent re-
verberation
to be independently
controlled
and mixed
together.
The REV-]
is a highly refined
system which offers superb performance
and is well suited
for use
in halls,
recording
studios,
broadcasting,
and for sound reinforcement applications..
FEATURES
À Professional
Digital
Reverberator
with
Excellent Performance
The REV-] is a digital reverb unit which meets
all requirements
for use in halls,
recording
studios,
and broadcasting
stations.
The frequency response is from 20 Hz to 18 kHz,
distortion
is below 0.0396,
and the dynamic
range is 85 dB in reverb mode.
Independent Control
of Early Reflections
and
Subsequent
Reverberation
YAMAHA's
proprietary
large scale
integration
(LSI) chips for signal
processing,
and a micro
computer,
allow subsequent
reverberation
of
high quality,
and up to 40 early reflections
(L, R each) to be independently controlled
and programmed.
Also,
use of the remote con-
trol unit enables
user control
over elements
such as sound directly
from the source,
early
reflections
bouncing off surfaces,
as well as
subsequent
reverberation,
in which
the reflec-
tions are multiplied,
to be perfectly con-
trolled.
Thus,
the delicate
natural
acoustic
properties
of concert
halls can be accurately
simulated.
The following can be controlled
with
the re-
mote control
unit:
: Early Reflections
Any one of eight different
early reflection
modes can be selected.
Initial
delay can be
set up to 600 msec.
in steps of 1 msec.
Accurate simulation
of the natural
acoustic
properties
of virtually any environment
is
made possible
through
the free control
of
settings for: room size (volume of room),
the
number of early reflections,
an acoustic
absorption
coefficient
of walls.
* Subsequent
Reverberations
Any one of eight different
subsequent
rever-
beration
modes can be selected.
The delay
time
between
direct sound and subsequent
reverber-
ation can be set up to 600 msec.
in steps of
1 msec.
Reverberation
time can be selected
from 0.1 sec. up to 99.9 sec. at the mid-low
frequency
band.
Also,
reverberation
time can
be adjusted
differently
in each of the four
frequency bands
(high,
mid-high,
mid-low,
and
low).
Main
unit
(ROM
=
30,
RAM
-
60),
Remote control
unit
(RAM -
99 Memories
The unit makes available 30 pre-set memories.
They include such settings as: "LARGE HALL",
"HAND CLAP",
"PERCUSSION PLATE",
and "CHORUS".
In addition,
the user can store modifications
of these pre-set programs,
or his own program,
in any of the 69 user-programmable memories.
Numeric
Data Entry
The user can enter data easily with
the ten
numeric buttons
on the main unit,
a ten-key
numeric pad on the remote control
unit,
and
the "UP" and "DOWN" keys and buttons.
The data being entered can be monitored
on 3-
digit,
7-segment
LEDs on the main and remote
control
units,
as well as a liquid crystal
display
(LCD), on the remote control unit.
Input Level with 16 Step LEDs
This assures
a precise
level
setting and a
wide dynamic range.
On the front panel of
the main unit,
the input can be monitored,
as
well as on the remote control
unit,
with
which both input and output can be monitored.
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