Roland JD-XA - 01: Equalizer (Equalizer); 02: Spectrum (Spectrum); 03: Low Boost (Low Boost); 04: Step Flt (Step Filter)

26
Eects
01: Equalizer
(Equalizer)
This is a four-band stereo equalizer (low, mid x 2, high).
L in
R in
L out
R out
4-Band EQ
4-Band EQ
Parameter Value Explanation
Low Freq 200, 400 Hz Frequency of the low range
Low Gain # -15–+15 dB Amount of low-range boost/cut
Mid1 Freq 200–8000 Hz Frequency of the middle range 1
Mid1 Gain -15–+15 dB Gain of the middle range 1
Mid1 Q
0.5, 1.0, 2.0, 4.0,
8.0
Width of the middle range 1
Set a higher value for Q to narrow
the range to be aected.
Mid2 Freq 200–8000 Hz Frequency of the middle range 2
Mid2 Gain -15–+15 dB Gain of the middle range 2
Mid2 Q
0.5, 1.0, 2.0, 4.0,
8.0
Width of the middle range 2
Set a higher value for Q to narrow
the range to be aected.
High Freq
2000, 4000, 8000
Hz
Frequency of the high range
High Gain # -15–+15 dB Amount of high-range boost/cut
Level # 0–127 Output volume
02: Spectrum
(Spectrum)
This is a stereo spectrum. Spectrum is a type of lter which modies
the timbre by boosting or cutting the level at specic frequencies.
L in
R in
L out
R out
Spectrum
Spectrum
Parameter Value Explanation
Band1 (250 Hz)
-15–+15 dB Gain of each frequency band
Band2 (500 Hz)
Band3 (1000 Hz)
Band4 (1250 Hz)
Band5 (2000 Hz)
Band6 (3150 Hz)
Band7 (4000 Hz)
Band8 (8000 Hz)
Q
0.5, 1.0, 2.0, 4.0,
8.0
Simultaneously adjusts the width
of the adjusted ranges for all the
frequency bands.
Level # 0–127 Output volume
03: Low Boost
(Low Boost)
Boosts the volume of the lower range, creating powerful lows.
L in
R in
L out
R out
Low Boost
2-Band EQ
2-Band EQ
Low Boost
Parameter Value Explanation
Boost Freq # 50–125 Hz
Center frequency at which the lower
range will be boosted
Boost Gain # 0–+12 dB
Amount by which the lower range
will be boosted
Boost Wid
(Boost width)
WIDE, MID,
NARROW
Width of the lower range that will
be boosted
Low Gain -15–+15 dB Amount of low-range boost/cut
High Gain -15–+15 dB Amount of high-range boost/cut
Level 0–127 Output volume
04: Step Flt
(Step Filter)
This is a lter whose cuto frequency can be modulated in steps.
You can specify the pattern by which the cuto frequency will
change.
You can use MFX CONTROL to restart the step sequence from the
beginning (p. 54).
L in
R in
L out
R out
Step Filter
Step Filter
Parameter Value Explanation
Step 01–16 0–127 Cuto frequency at each step
Sync Hz, NOTE
Hz: The Rate value is specied in Hz.
NOTE: The Rate value is specied as
a note value.
Rate #
0.05–10.00 Hz,
note
Rate of modulation
Attack # 0–127
Speed at which the cuto frequency
changes between steps
FilterType
LPF, BPF, HPF,
NOTCH
Type of lter
Frequency range that will pass
through each lter
LPF: frequencies below the cuto
BPF: frequencies in the region of
the cuto
HPF: frequencies above the cuto
NOTCH: frequencies other than the
region of the cuto
FilterSlope -12, -24, -36 dB
Slope (steepness) of the lter
(Amount of attenuation per octave)
-12 dB: gentle
-24 dB: steep
-36 dB: extremely steep
FilterReso #
(Filter Resonance)
0–127
Filter resonance level
Increasing this value will emphasize
the region near the cuto frequency.
FilterGain 0–+12 dB Amount of boost for the lter output
Level 0–127 Output volume