Roland VIMA JM-8 Owner's Manual page 61

(4) Press the [ON] (or [OFF]) display button to switch
the compressor on (icon lights) or off (icon goes
dark).
(5) Press the display field below "SMF COMPRESSOR"
that shows the name of the currently selected pre-
set.
(6) Select the desired preset with the dial.
The available presets are:
1. Hard Comp 4. Mid Boost
2. Soft Comp 5. High Boost
3. Low Boost
(7) If none of the preset memories contains the set-
tings you need, press the display field of the
parameter you wish to change.
(8) Set the desired value with the dial.
BC LEVEL (0~127): Use this parameter to set the
compressor's input level. The higher the value, the
stronger the three frequency bands will be com-
pressed. The value you set here is added to the LEVEL
settings of the three bands. If you set this parameter
to "0", the compressor has no effect on the output
signal. (This parameter can also be set via the virtual
numeric keypad that is selected when you press the
dial.)
BC GAIN (–12~0~12dB): Use this parameter to cor-
rect the level at the compressor's outputs. If the set-
tings of the remaining parameters lead to a signifi-
cantly lower level, select a positive value. If your set-
tings lead to a significantly higher level, select a neg-
ative value. "0" means that the level is neither
boosted nor attenuated. (This parameter can also be
set via the virtual numeric keypad that is selected
when you press the dial.)
SPLIT 1 (80~800)/SPLIT 2 (2000~12000): These two
parameters specify the frequency where two bands
are separated. The compressor has three bands, and
so there are two cross-over frequencies you can set:
"1" between the "Lo" and "Mid" ranges; and "2"
between the "Mid" and "Hi" ranges.
Lo/Mid/Hi: Because the remaining parameters are
the same for each band, we will only discuss them
once. As you see, each of the three frequency ranges
has its own set of parameters that allow you to spec-
ify their behavior.
ATTACK (0~100ms): Use this parameter to specify
how fast the compressor of the band in question
should start processing the signal once the level of
that band exceeds the THRSHLD level. Choose a
smaller value if you prefer a compression similar to
that of FM radio stations. Higher values may yield a
"snappier" or "funkier" sound.
RELEASE (50~5000ms): This parameter allows you to
specify how fast the compressor of the correspond-
ing band should stop working when the signal level
drops below the THRSHLD value.
THRSHLD (–36~0dB): This parameter allows you to
set the level the frequency band ("Lo", "Mid" or "Hi")
must reach to trigger its compressor. The lower the
value, the more noticeable the compression will be.
RATIO (1:1.0~1:INF): Use this parameter to specify
how strongly the level should be reduced when the
band's level exceeds the TRSHLD level. "1:2.0", for
example, means that the level values above the
6. Standard
THRSHLD level are halved. "1:INF" is useful if you set
7. User
THSRHLD to "0dB" or thereabout. This produces a
limiter effect, which means that no signal level will
never exceed the THRSHLD value. This may help you
protect the speakers of the PA system etc.
LEVEL (–24~+24dB): This parameter allows you to
establish the desired mix among the three compres-
sor bands. Choose a negative value to decrease the
level, or a positive one to increase it. Choose "0" for a
band whose level is OK as is.
(9) To save the settings you have just made, press the
[WRITE¥USER] display button.
Note: There is only one USER memory (memory no. 7) for
your own settings. By saving new settings, you therefore
overwrite the previous ones.
(10) Press the [EXIT] button repeatedly until it stops
flashing to return to the main page.
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VIMA JM-8
Using the SMF compressor and SMF equalizer
61