Roland Prelude - Manual (Page 58)

58
This is a four-band stereo equalizer (low, mid x 2, high).
fig.MFX-01
This is a stereo spectrum. Spectrum is a type of filter which modifies
the timbre by boosting or cutting the level at specific frequencies.
fig.MFX-02
This is an equalizer which cuts the volume greatly, allowing you to
add a special effect to the sound by cutting the volume in varying
ranges.
fig.MFX-03
Boosts the volume of the lower range, creating powerful lows.
fig.MFX-04
01: EQUALIZER
Parameter Value Description
Low Freq 200, 400 Hz Frequency of the low range
Low Gain -15– +15 dB Gain of the low range
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 affect-
ed.
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 affect-
ed.
High Freq 2000, 4000, 8000 Hz Frequency of the high range
High Gain -15– +15 dB Gain of the high range
Level 0–127 Output Level
02: SPECTRUM
Parameter Value Description
Band1 (250Hz)
-15– +15 dB Gain of each frequency band
Band2 (500Hz)
Band3 (1000Hz)
Band4 (1250Hz)
Band5 (2000Hz)
Band6 (3150Hz)
Band7 (4000Hz)
Band8 (8000Hz)
Q
0.5, 1.0, 2.0, 4.0,
8.0
Simultaneously adjusts the width of
the adjusted ranges for all the fre-
quency bands.
Level 0–127 Output Level
L in
R in
L out
R out
4-Band EQ
4-Band EQ
L in
R in
L out
R out
Spectrum
Spectrum
03: ISOLATOR
Parameter Value Description
Boost/
Cut Low
-60– +4 dB
These boost and cut each of the High,
Middle, and Low frequency ranges.
At -60 dB, the sound becomes inaudi-
ble. 0 dB is equivalent to the input lev-
el of the sound.
Boost/
Cut Mid
Boost/
Cut High
Anti Phase Low
Sw
OFF, ON
Turns the Anti-Phase function on and off
for the Low frequency ranges.
When turned on, the counter-channel
of stereo sound is inverted and added
to the signal.
Anti Phase Low
Level
0–127
Adjusts the level settings for the Low fre-
quency ranges.
Adjusting this level for certain fre-
quencies allows you to lend emphasis
to specific parts. (This is effective only
for stereo source.)
Anti Phase Mid
Sw
OFF, ON
Settings of the Anti-Phase function for the
Middle frequency ranges
The parameters are the same as for
the Low frequency ranges. Anti Phase Mid
Level
0–127
Low Boost Sw OFF, ON
Turns Low Booster on/off.
This emphasizes the bottom to create
a heavy bass sound.
Low Boost Level 0–127
Increasing this value gives you a heavier
low end.
* Depending on the Isolator and filter
settings this effect may be hard to dis-
tinguish.
Level 0–127 Output Level
04: LOW BOOST
Parameter Value Description
Boost
Frequency
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 Width
WIDE, MID,
NARROW Width of the lower range that will be
boosted
Low Gain -15– +15 dB Gain of the low frequency range
High Gain -15– +15 dB Gain of the high frequency range
Level 0–127 Output level
L in
R in
L out
R out
Isolator
Low Boost
Low Boost
Isolator
L in
R in
L out
R out
Low Boost
2-Band EQ
2-Band EQ
Low Boost
Prelude_e.book Page 58 Wednesday, January 14, 2009 2:18 PM