Roland Groovebox MC-707

78
Parameter List
INST FILTER
Parameter Value Explanation
Filter Type
Selects the type of lter.
OFF No lter is used.
LPF
Low Pass Filter. This cuts the frequencies
in the region above the cuto frequency
(Cuto Frequency). Since this cuts the high-
frequency region, the sound becomes more
mellow. This is the most common lter used
in synthesizers.
BPF
Band Pass Filter. This leaves only the
frequencies in the region of the cuto
frequency (Cuto Frequency), and cuts
the rest. This can be useful when creating
distinctive sounds.
HPF
High Pass Filter. This cuts the frequencies in
the region below the cuto frequency (Cuto
Frequency). This is suitable for creating
percussive sounds emphasizing their higher
tones.
PKG
Peaking Filter. This emphasizes the
frequencies in the region of the cuto
frequency (Cuto Frequency). This can be
used to portray the resonance peak of a
drum.
LPF2
Low Pass Filter 2. Although frequency
components above the Cuto frequency
(Cuto Frequency) are cut, the sensitivity of
this lter is half that of the LPF. This makes
it a comparatively warmer low pass lter.
This lter is good for use with simulated
instrument sounds such as the acoustic
piano.
* If you set “LPF2,” the setting for the Resonance
parameter will be ignored (p. 78).
LPF3
Low Pass Filter 3. Although frequency
components above the Cuto frequency
(Cuto Frequency) are cut, the sensitivity of
this lter changes according to the Cuto
frequency. While this lter is also good for use
with simulated acoustic instrument sounds,
the nuance it exhibits diers from that of
the LPF2, even with the same TVF Envelope
settings.
* If you set “LPF3,” the setting for the Resonance
parameter will be ignored (p. 78).
Cuto Frequency 0–1023
Selects the frequency at which the lter
begins to have an eect on the waveform’s
frequency components.
With “LPF/LPF2/LPF3” selected for the Filter
Type parameter, lower cuto frequency
settings reduce a tone’s upper harmonics
for a more rounded, warmer sound. Higher
settings make it sound brighter.
If “BPF” is selected for the Filter Type, harmonic
components will change depending on the
TVF Cuto Frequency setting. This can be
useful when creating distinctive sounds.
With “HPF” selected, higher Cuto Frequency
settings will reduce lower harmonics to
emphasize just the brighter components of
the sound.
With “PKG” selected, the harmonics to be
emphasized will vary depending on Cuto
Frequency setting.
Cuto Velocity Curve FIXED, 1–7
Selects one of the following seven curves that
determine how keyboard playing dynamics
(velocity) inuence the cuto frequency. Set
this to “FIXED” if you don’t want the Cuto
frequency to be aected by the keyboard
velocity.
1 2 3 4 5 6 7
Cuto Velocity Sens -100–+100
Use this parameter when changing the
cuto frequency to be applied as a result of
changes in playing velocity. Specify a positive
“+” value if you want the cuto frequency to
raise when you play strongly, or a negative “-”
value if you want it to lower.
Parameter Value Explanation
Resonance 0–1023
Emphasizes the portion of the sound in
the region of the cuto frequency, adding
character to the sound. Excessively high
settings can produce oscillation, causing the
sound to distort.
LPF BPF HPF PKG
Level
Frequency
Cuto Frequency
High
Low
parameter value
Resonance Velocity
Sens
-100–+100
Use this parameter when changing the
resonance to be applied as a result of
changes in playing velocity. Specify a positive
“+” value if you want resonance to increase
when you play strongly, or a negative “-” value
if you want it to decrease.
INST FENV
Parameter Value Explanation
Env Depth -63–+63
Species the depth of the Filter envelope.
Higher settings increase the change
produced by the Filter envelope. Negative (-)
value will invert the shape of the envelope.
Env Velocity Curve FIXED, 1–7
Selects one of the following seven types of
curve by which keyboard playing dynamics
aect the depth of the lter envelope.
If you don’t want keyboard playing dynamics
to aect the lter envelope depth, specify
“FIXED.”
1 2 3 4 5 6 7
Env Velocity Sens -100–+100
Specify this if you want keyboard playing
dynamics to aect the lter envelope depth.
Specify a positive “+” value if you want the
lter envelope to apply more deeply as you
play more strongly, or a negative “-” value if
you want it to apply less deeply.
Env Time 1 Velocity
Sens
-100–+100
Specify this if you want keyboard playing
dynamics to aect Time 1 of the lter
envelope. If you want Time 1 to be speeded
up for strongly played notes, set this
parameter to a positive “+” value. If you want
it to be slowed down, set this to a negative “-”
value.
Env Time 4 Velocity
Sens
-100–+100
Specify this if you want key release velocity
to aect Time 4 of the lter envelope. If you
want Time 4 to be speeded up for quickly
released notes, set this parameter to a
positive (+) value. If you want it to be slowed
down, set this to a negative (-) value.
Env Time 1–4 0–1023
Specify the lter envelope times (Time 1–
Time 4). Higher settings will lengthen the
time until the next cuto frequency level is
reached. (For example, Time 2 is the time over
which Level 1 will change to Level 2.)
T1 T2 T3 T4
Note o
Cuto
Frequency
Time
Note on
T: Time L: Level
L3
L0
L2L1 L4
Env Level 0–4 0–1023
Specify the lter envelope levels (Level 0–
Level 4).
Specify the amount of cuto frequency
change at each point relative to the reference
cuto frequency (the cuto frequency value
specied in the Filter screen).