Roland DR-3 Manuale Utente

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Chapter 5 Changing the Overall Tone of the Sound and Acoustics (TSC)
■ Changing the Compressor 
Parameters
This changes the parameters of the Sound Shape 
compressor.
The Compressor compresses the overall output 
signal when the input volume level exceeds a set 
value.
The values that can be set for each of the 
parameters are shown below.
Parameter
Value
Description
COMP / 
Switch
OFF, ON
This parameter turns the 
compressor effect on/off.
COMP / 
SplitL
20 Hz–
800 Hz
This sets the frequency (in the 
lower range) at which the 
source sound is split into 
three separate ranges.
COMP / 
SplitH
1.6 kHz–
14.0 kHz
This sets the frequency (in the 
upper range) at which the 
source sound is split into 
three separate ranges.
COMP
(Low) / 
Thres
-30 dB–
+6 dB
This sets the volume level at 
which the lower-range com-
pressor goes into effect.
COMP
(Low) / 
Ratio
1:1.00–
1:16.0, 
1:INF
This sets the ratio of suppres-
sion of the lower-range out-
put when the input level 
exceeds the Lo threshold lev-
el (COMP (Low) / Thres).
COMP
(Low) / 
Attack
0 ms–
100 ms
This sets the time it takes for 
the lower-range compressor 
to go into effect once the in-
put level exceeds the Lo 
threshold level.
COMP
(Low) / 
Release
50 ms–
5000 ms
This sets the time it takes for 
the lower-range compressor 
effect to stop once the input 
level falls below the Lo 
threshold level.
COMP(Mid) 
/ Thres
-30 dB–
+6 dB
This sets the volume level at 
which the midrange com-
pressor goes into effect.
COMP(Mid) 
/ Ratio
1:1.00–
1:16.0, 
1:INF
This sets the ratio of suppres-
sion of the midrange output 
when the input level exceeds 
the Middle threshold level 
(COMP(Mid) / Thres).
COMP(Mid) 
/ Attack
0 ms–
100 ms
This sets the time it takes for 
the midrange compressor to 
go into effect once the input 
level exceeds the Middle 
threshold level.
COMP(Mid) 
/ Release
50 ms–
5000 ms
This sets the time it takes for 
the lower-range compressor 
effect to stop once the input 
level falls below the Middle 
threshold level.
COMP(Hi) 
/ Thres
-30 dB–
+6 dB
This sets the volume level at 
which the upper-range com-
pressor goes into effect.
COMP(Hi) 
/ Ratio
1:1.00–
1:16.0, 
1:INF
This sets the ratio of suppres-
sion of the upper-range out-
put when the input level 
exceeds the Hi threshold lev-
el (COMP(Hi) / Thres).
COMP(Hi) 
/ Attack
0 ms–
100 ms
This sets the time it takes for 
the upper-range compressor 
to go into effect once the in-
put level exceeds the Hi 
threshold level.
COMP(Hi) 
/ Release
50 ms–
5000 ms
This sets the time it takes for 
the upper-range compressor 
effect to stop once the input 
level falls below the Hi 
threshold level.
*
With the compressor, the level is automatically adjusted 
to the optimum setting according to the threshold 
(Thres) and ratio (Ratio) settings. In addition, since 
lengthening the attack (Attack) setting may result in 
distortion, a buffer (margin) of -6 dB is provided. Adjust 
the following parameter levels as needed.
COMP / 
Low Lev
-60 dB–
+6 dB
Sets the volume level of the 
lower range after the signal 
passes through the expander 
and compressor.
COMP / 
Mid Lev
-60 dB–
+6 dB
Sets the volume level of the 
midrange after the signal 
passes through the expander 
and compressor.
COMP / 
High Lev
-60 dB–
+6 dB
Sets the volume level of the 
upper range after the signal 
passes through the expander 
and compressor.
COMP / 
OutLevel
-60 dB–
+6 dB
Sets the overall volume level 
after compressor.
Parameter
Value
Description