Roland BK-5 用户手册

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Menu options 
58
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Backing Keyboard BK-5
The following parameters are available:
4.
Mfx
The BK-5 contains one multi-effects processor 
(“Mfx”) that can be used to process the desired key-
board part(s). Select “Off” for parts that don’t need to 
be processed by this Mfx.
Expression Pedal
Select “Off” if you don’t need pedal expression for the 
selected part. This means that the keyboard part in 
question no longer responds to an expression pedal 
you may have connected to the SWITCH/EXPRESSION 
socket.
Pedal Exp Down/Up
The expression pedal allows you to control the vol-
ume of all parts by foot.
“Up” and “Down” refer to the volume that is used 
when the expression pedal is pressed (“Up”, highest 
volume) or in the upright position (“Down”, lowest 
volume).
You do not need to specify “0” for the “Down” posi-
tion. Selecting any other values will reduce the vol-
ume of the selected part up to the “Down” value. 
Likewise, you do not need to specify “127” as maxi-
mum value for “Up”.
NOTE
The expression pedal sends MIDI Expression commands 
(CC11).
It is perfectly possible to set the “Down” value to 
“127” and the “Up” value to “0”, so that the selected 
part only sounds when the expression pedal is in the 
upright position. This can be used for some clever 
effects: instead of alternating between the Upper1 
and Upper2 parts by varying your velocity (which 
requires a considerable amount of “striking preci-
sion”, see “Min Value” and “Max Value” on p. 57), you 
could invert UP2’s response to the expression pedal, 
so that UP1 doesn’t sound when UP2 does, and vice 
versa.
Hold Pedal
This parameter allows you to specify whether and 
how a hold/damper pedal you connect to the PEDAL 
HOLD socket should respond to Hold messages 
(CC64).
“Auto” means that the part in question only responds 
to Hold messages if it is assigned to the right half 
(Split) or the entire keyboard. 
“On” means that the part in question always responds 
to Hold messages, even if it is assigned to the left half 
of the keyboard. 
“Off”, finally, means that the part does not respond to 
Hold messages.
Parameter
Setting range
Explanation
Switch
Off, On
This parameter allows 
you to switch the 
equalizer on and off.
High Freq
1500Hz, 2000Hz, 
3000Hz, 4000Hz, 
6000Hz, 8000Hz, 
12000Hz
Allows you to set the 
cutoff frequency of 
the high band (this is 
a shelving filter).
High Gain
–15~+15dB
Use this parameter to 
set the level of the 
selected “High” fre-
quency. Positive val-
ues boost (increase 
the volume of) that 
frequency band, neg-
ative values cut 
(attenuate) it.
Mid Freq
200~8000Hz
Allows you to set the 
cutoff frequency of 
the middle band (this 
is a peaking filter).
Mid Gain
–15~+15dB
Use this parameter to 
set the level of the 
selected “Mid” fre-
quency.
Mid Q
0.5, 1.0, 2.0, 4.0, 
8.0
Use this parameter to 
specify the width of 
the “Mid Frequency” 
band that you want to 
boost or cut. Smaller 
values mean that 
neighboring frequen-
cies above/below that 
value are also 
affected.
Low Freq
90, 150, 180, 300, 
360, 600Hz
Allows you to set the 
cutoff frequency of 
the low band (this is a 
shelving filter).
Low Gain
–15~+15dB
Use this parameter to 
set the level of the 
selected “Low” fre-
quency.
Parameter
Setting
Mfx
Off, On
Parameter
Setting
Expression Pedal
Off, On
Parameter
Setting
Pedal Exp Down/Up
0~127
Parameter
Setting
Hold Pedal
Auto, On, Off
BK-5_US.book  Page 58  Monday, November 14, 2011  12:43 PM