Roland SD-90 User manual

1
Audio Multi-Effects
Space Multi ............................ 2
Enhancer.....................................2
Equalizer..................................... 2
Noise Suppressor ...................... 3
Chorus/Flanger......................... 3
Reverb.........................................4
Other Parameters ...................... 5
Guitar Multi........................... 6
Compression Sustainer ............ 6
Overdrive/Distortion...............6
Amp Simulator.......................... 7
Equalizer..................................... 7
Noise Suppressor ...................... 7
Delay...........................................8
Chorus/Flanger......................... 8
Other Parameters ...................... 9
Vocal/Bass Multi ................ 10
Comp/Limiter......................... 10
Lo-Fi Processor........................ 11
Equalizer................................... 11
Noise Suppressor .................... 12
Delay.........................................12
Chorus/Flanger....................... 12
Other Parameters .................... 13
Groove Multi ....................... 14
Comp/Limiter......................... 14
Lo-Fi Processor........................ 15
Filter.......................................... 15
Noise Suppressor .................... 16
Stereo Flanger..........................16
Other Parameters .................... 17
Isolator ..................................18
Comp/Limiter .........................18
Isolator.......................................19
Noise Suppressor.....................19
Pitch Shifter ..............................19
Other Parameters.....................20
Center Canceller..................21
Center Canceller ......................21
Equalizer...................................21
Noise Suppressor.....................22
Reverb .......................................22
Other Parameters.....................23
Lo-Fi Processor ....................24
Lo-Fi Processor.........................24
Noise Suppressor.....................24
Noise Generator.......................25
Other Parameters.....................26
Surround Reverb.................27
Noise Suppressor.....................27
Surround Reverb .....................27
Other Parameters.....................28
Mastering Effect...................29
Enhancer ...................................29
Equalizer...................................29
Noise Suppressor.....................30
Band Comp/Lim .....................30
Other Parameters.....................32

2
Audio Multi-Effects
Space Multi
Space Multi can use what are called “spatial” effects, such as choruses that impart spaciousness and fatness to
sounds, flangers that add undulations, delays that combine a delayed sound, and reverbs that add lingering
reverberations.
fig.4-09(Space Multi)
■ Enhancer
By adding sounds which are out-of-phase with the direct sound, this effect enhances the definition of the sound,
and pushes it to the forefront.
EH SW (switch)
Off , On (Off = 0, On = 1)
Turns the enhancer effect on/off.
EH Sens (sensitivity)
0 – +64 – +127
Adjusts the manner in which the enhancer will be applied relative to the input signals.
EH Mix (mix level)
0 – +64 – +127
Adjust the amount of the phase-shifted sound that is mixed into the input.
■ 3-Band Equalizer
Adjusts the tone. Parametric control is provided for the middle range.
EQ SW (switch)
Off , On
Switches the equalizer effect on/off.
EQ Low (low gain)
-12 – 0 – +12 dB
Adjusts the low frequency range tone.
EQ MidF (middle frequency)
200 – 1000 – 8000 Hz
Specify the center of the frequency range that will be adjusted by the “EQ Mid Gain.”
EQ MidQ (middle Q)
0.5 – 2.0 – 8.0
Adjusts the width of the area affected by the EQ centered at the “EQ Mid Freq.” Higher values will narrow the
area.
Input L
Input R
Output L
Output R
Enhancer 3-Band
Equalizer Noise
Suppressor Chorus/
Flanger Reverb
Audio Multi-Effects

3
Audio Multi-Effects
EQ MidG (middle gain)
-12 – 0 – +12 dB
Adjusts the middle frequency range tone.
EQ High (high gain)
-12 – 0 – +12 dB
Adjusts the high frequency range tone.
EQ Total (total gain)
-12 – 0 – +12 dB
Adjusts the volume.
■ Noise Suppressor
The noise suppressor leaves the original sound unmodified, but mutes only the noise during the silent intervals.
NS SW (switch)
Off, On
Turns the noise suppressor effect on/off.
NS Thrsh (threshold level)
0 – +4 – +127
Adjusts the level at which the noise suppressor will begin to take effect. When the signal drops below the
specified level, it will be muted.
■ Chorus/Flanger
Chorus :A sound with a subtly shifted pitch is added to the direct sound, making the final output sound thicker
and broader.
Flanger :The flanging effect gives a twisting, jet-airplane-like character to the sound.
CF SW (switch)
Off, On
Turns the chorus or flanger effect on/off.
CF Type (type)
Cho , Fln
Select the type of effect.
CF PreDly (pre delay)
0.1 – 15.0 – 30.0 ms
Adjusts the time needed for the effect sound to be output after the direct sound has been output. By setting a
longer Pre Delay time, you can obtain an effect that sounds like more than one sound is being played at the same
time (doubling effect).
CF Rate (rate)
0.05 – 0.85 – 10.0 Hz (0.05 = 1)
Adjusts the rate at which the chorus is modulated.

4
Audio Multi-Effects
CF Depth (depth)
0 – +32 – +127
Adjusts the depth of the Chorus effect. To use it for doubling, set the value to “0”.
CF Fbk (feedback)
-98 – +70 – +98 %
Determines the amount of feedback.
Increasing the value will emphasize the effect, creating a more unusual sound. (Type = Fln only)
CF Bal (balance)
D100:0W – D50:50W – D0:100W
Adjust the balance between the effect sound volume and the direct sound volume.
■ Reverb
Reverberation (or reverb) is the effect caused by sound waves decaying in an acoustic space, or a digital
simulation thereof. This decay occurs because sound waves bounce off many walls, ceilings, objects, etc. in a very
complex way. These reflections, coupled with absorption by various objects, dissipate the acoustic energy over a
certain period of time (called the decay time). The ear perceives this phenomenon as a continuous wash of sound.
RV SW (switch)
Off, On
Switches the reverb effect on/off.
RV Type (type)
Hall , Room, Plate
Selects the Reverb Type. Various different simulations of space are offered.
Hall : Simulates the reverberation in a concert hall.
Room : Simulates the reverberation in a small room.
Plate : Simulates plate reverberation (a reverb unit that uses the vibration of a metallic plate). Provides a metallic
sound with a distinct upper range.
RV Time (time)
0.1 – 3.0 – 10.0 sec (0.1 = 1)
This parameter adjusts the duration (time) of the reverb.
RV HF (HF damp)
-10 – -3 – 0
This parameter adjusts the amount of damping for High Damp. No high-frequency damping occurs when set to
“0.”
RV Bal (balance)
D100:0W – D50:50W – D0:100W
Adjust the balance between the effect sound volume and the direct sound volume.

5
Audio Multi-Effects
■ Other Parameters
Level (level)
0 – +127
Adjusts the volume of the effect output.

6
Audio Multi-Effects
Guitar Multi
Guitar Multi is an algorithm provided with effects such as a compressor to smooth out uneven sounds,
distortion , chorus , and flanger , for recording with electric guitar in a wide variety of genres, ranging from clean
sounds to distortion sounds.
fig.4-10(Guitar Multi)
■ Compression Sustainer
The compression sustainer is an effect that attenuates loud input levels and boosts soft input levels, thus evening
out the volume to create sustain without distortion.
CS SW (switch)
Off , On
Turns the compression sustainer effect on/off.
CS Atk (attack)
0 – +64 – +127
Adjust the time from when the input level exceeds the threshold level to when the effect begins to apply.
CS Sus (sustain)
0 – +64 – +127
Adjusts the range (time) over which low-level signals are boosted. Larger values will result in longer sustain.
CS Lev (level)
0 – +127
Adjusts the volume.
Input L
Input R
Output L
Output R
Compression
Sustainer Overdrive/ Distortion Amp
Simulator Equalizer Noise
Suppressor Delay Chorus/ Flanger

7
Audio Multi-Effects
■ Overdrive/Distortion
This effect distorts the sound to create long sustain.
OD SW (switch)
Off, On
Turns the overdrive or distortion effect on/off.
OD Type (type)
OD , Dst
Selects the type of distortion.
Overdrive : A natural overdrive sound is obtained.
Distortion : Allows you to obtain a rich effect just like distortion, without losing the subtle nuance of the
overdrive.
OD Drive (drive)
0 – +100 – +127
Adjusts the depth of distortion. A higher value will emphasize the distortion.
OD Tone (tone)
-24 – 0 – +24
Adjusts the tone.
OD Lev (level)
0 – +64 – +127
Adjusts the volume.
■ Amp Simulator
This simulates the characteristics of various types of guitar amps.
AS SW (switch)
Off, On
Turns the amp simulator effect on/off.
AS Type (type)
Small, BltIn , 2-Stk, 3-Stk
Selects the type of speaker that will be simulated.
Small : small amp
BltIn : single-unit type amp
2-Stk : large double stack amp
3-Stk : large triple stack amp.

8
Audio Multi-Effects
■ Equalizer
Adjusts the tone.
EQ SW (switch)
Off , On
Switches the equalizer effect on/off.
EQ Low (low gain)
-12 – 0 – +12 db
Adjusts the low frequency range tone.
EQ High (high gain)
-12 – 0 – +12 dB
Adjusts the high frequency range tone.
■ Noise Suppressor
The noise suppressor leaves the original sound unmodified, but mutes only the noise during the silent intervals.
NS SW (switch)
Off, On
Turns the noise suppressor effect on/off.
NS Thrsh (threshold level)
0 – +16 – +127
Adjusts the level at which the noise suppressor will begin to take effect. When the signal drops below the
specified level, it will be muted.
■Delay
The delay effect adds delayed sound to the direct sound, giving more body to the sound or creating special effects.
DL SW (switch)
Off, On
Turns the stereo delay effect on/off.
DL Time (delay time)
1 – 250 – 370 ms
Adjusts the delay time (i.e., the interval for which sound is delayed).
DL Fbk (feedback)
-98 – +32 – +98 %
Adjusts the amount of feedback. Changing the amount of feedback causes the number of time the delayed sound
is repeated to change as well.
DL HF (HF damp)
200 – 8000, Byps (200 = 1, Byps = 0)
Adjust the degree of HF damping. With a setting of 0, there will be no damping. As the value is decreased,
damping will become more pronounced.

9
Audio Multi-Effects
DL Bal (balance)
D100:0W – D82:18W – D0:100W
Adjust the balance between the effect sound volume and the direct sound volume.
■Chorus/Flanger
Chorus:A sound with a subtly shifted pitch is added to the direct sound, making the final output sound thicker
and broader.
Flanger:The flanging effect gives a twisting, jet-airplane-like character to the sound.
CF SW (switch)
Off, On
Turns the chorus or flanger effect on/off.
CF Type (type)
Cho, Fln
Select the type of effect.
CF PreDly (pre delay)
0.1 – 3.2 – 30.0 ms
Adjusts the time needed for the effect sound to be output after the direct sound has been output. By setting a
longer Pre Delay time, you can obtain an effect that sounds like more than one sound is being played at the same
time (doubling effect).
CF Rate (rate)
0.05 – 0.4 – 10.0 Hz (+0.05 = 0)
Adjusts the rate at which the chorus is modulated.
CF Depth (depth)
0 – +32 – +127
Adjusts the depth of the Chorus effect. To use it for doubling, set the value to “0”.
CF Fbk (feedback)
-98 – +70 – +98 %
Determines the amount of feedback.
Increasing the value will emphasize the effect, creating a more unusual sound. (Type = Fln only)
CF Bal (balance)
D100:0W – D50:50W – D0:100W
Adjust the balance between the effect sound volume and the direct sound volume.

10
Audio Multi-Effects
■Other Parameters
Panpot (panpot)
L100:0R – L50:50R – L0:100R
Adjusts the pan of the effect output.
Level (level)
0 – +127
Adjusts the volume of the effect output.

11
Audio Multi-Effects
Vocal/Bass Multi
Vocal/Bass Multi is an algorithm suited to recording vocals or bass through a mike. In addition to such effects as
a compressor to suppress differences in volume levels, and an enhancer to add modulation to sounds, it can also
add spatial echoes with delay and reverb. Also, by using the lo-fi saturator in addition to ordinary vocals you can
create lo-fi sounds like those recorded with older audio equipment.
fig.4-11(vocal/bass multi)
■Comp/Limiter
Depending on the setting of the parameters, this effect can be used as a compressor or as a limiter. A compressor
holds down high-level signals and boosts low-level signals, evening out the volume. A limiter is used when you
wish to hold down excessive input levels.
CL SW (switch)
Off, On
Turns the compressor limiter effect on/off.
CL Thrsh (threshold)
0 – +96 – +127
Adjusts the level at which the effect will begin to apply. To use this effect as a limiter, set a high Threshold Level.
CL Ratio (ratio)
1.0:1, 1.2:1, 1.5:1, 2.0:1, 2.8:1, 4.0:1, 8.0:1, 16.0:1, inf.:1 (1.0:1 = 0)
Select the compression ratio that will apply when the Threshold Level is exceeded. When using the effect as a
limiter, you will normally set this to “inf.:1.”
CL Atk (attack)
0.25 – 10.0 – 100.0 ms
Adjust the time from when the input level exceeds the threshold level to when the effect begins to apply. When
using the effect as a limiter, set a short Attack Time.
CL Rels (release)
50 – 500 – 5000 ms
Adjust the time from when the input level drops below the threshold level to when the effect ceases to apply.
When using the effect as a limiter, set a short Release Time.
CL Gain (gain)
-6 – +6 – +18 dB
Adjusts the output gain.
CL Lev (level)
0 – +100 – +127
Adjusts the volume.
Input L
Input R
Output L
Output R
Equalizer Noise
Suppressor Delay Chorus/ Flanger
Comp/
Limiter Lo-Fi
Processor

12
Audio Multi-Effects
■Lo-Fi Processor
This cuts the high and low frequency range, and the frequencies for each range are freely adjustable. Or this
produces natural distortion like that obtained with older audio equipment or an AM radio. It’s ideal for creating
lo-fi sounds.
LF SW (switch)
Off, On
Turns the lo-fi saturator effect on/off.
LF Drive (drive)
0 – +12 – +127
Adjusts the amount of distortion.
LF Low (low cut)
UnLim, 40 – 400 – 1000 Hz (UnLim = 0)
Adjusts the frequency above which the effect cut the high frequency range.
LF High (high cut)
1000 – 4000 – 8000 Hz, UnLim (UnLim = 0)
Adjusts the frequency below which the effect cut the low frequency range.
LF Gain (gain)
-12 – +3 – +12 dB
Adjusts the output gain.
■Equalizer
Adjusts the tone.
EQ SW (switch)
Off, On
Switches the equalizer effect on/off.
EQ Low (low gain)
-12 – 0– +12 db
Adjusts the low frequency range tone.
EQ High (high gain)
-12 – 0– +12 dB
Adjusts the high frequency range tone.

13
Audio Multi-Effects
■Noise Suppressor
The noise suppressor leaves the original sound unmodified, but mutes only the noise during the silent intervals.
NS SW (switch)
Off, On
Turns the noise suppressor effect on/off.
NS Thrsh (threshold level)
0 – +4 – +127
Adjusts the level at which the noise suppressor will begin to take effect. When the signal drops below the
specified level, it will be muted.
■Delay
The delay effect adds delayed sound to the direct sound, giving more body to the sound or creating special
effects.
DL SW (switch)
Off, On
Turns the stereo delay effect on/off.
DL Time (delay time)
1 – 200 – 370 ms
Adjusts the delay time (i.e., the interval for which sound is delayed).
DL Fbk (feedback)
-98 – +16 – +98 %
Adjusts the amount of feedback. Changing the amount of feedback causes the number of time the delayed sound
is repeated to change as well.
DL HF (HF damp)
200 – 4000 – 8000, Byps (200 = -17)
Adjust the degree of HF damping. With a setting of 0, there will be no damping. As the value is decreased,
damping will become more pronounced.
DL Bal (balance)
D100:0W – D90:10W – D0:100W
Adjust the balance between the effect sound volume and the direct sound volume.

14
Audio Multi-Effects
■Chorus/Flanger
Chorus:A sound with a subtly shifted pitch is added to the direct sound, making the final output sound thicker
and broader.
Flanger:The flanging effect gives a twisting, jet-airplane-like character to the sound.
CF SW (switch)
Off, On
Turns the chorus or flanger effect on/off.
CF Type (type)
Cho, Fln
Select the type of effect.
CF PreDly (pre delay)
0.1 – 3.2 – 30.0 ms
Adjusts the time needed for the effect sound to be output after the direct sound has been output. By setting a
longer Pre Delay time, you can obtain an effect that sounds like more than one sound is being played at the same
time (doubling effect).
CF Rate (rate)
0.05 – 0.4 – 10.0 Hz
Adjusts the rate at which the chorus is modulated.
CF Depth (depth)
0 – +32 – +127
Adjusts the depth of the Chorus effect. To use it for doubling, set the value to “0”.
CF Fbk (feedback)
-98 – +70 – +98 %
Determines the amount of feedback.
Increasing the value will emphasize the effect, creating a more unusual sound. (Type = Fln only)
CF Bal (balance)
D100:0W – D50:50W – D0:100W
Adjust the balance between the effect sound volume and the direct sound volume.
■Other Parameters
Panpot (panpot)
L100:0R – L50:50R – L0:100R
Adjusts the pan of the effect output.
Level (level)
0 – +127
Adjusts the volume of the effect output.

15
Audio Multi-Effects
Groove Multi
This is a multi-effect optimized for dance music. It is convenient for processing a song from an audio CD or other
source to create phrase materials.
fig.4-12(Groove Multi)
■Comp/Limiter
Depending on the setting of the parameters, this effect can be used as a compressor or as a limiter. A compressor
holds down high-level signals and boosts low-level signals, evening out the volume. A limiter is used when you
wish to hold down excessive input levels.
CL SW (switch)
Off, On
Turns the compressor limiter effect on/off.
CL Thrsh (threshold)
0 – +96 – +127
Adjusts the level at which the effect will begin to apply. To use this effect as a limiter, set a high Threshold Level.
CL Ratio (ratio)
1.0:1, 1.2:1, 1.5:1, 2.0:1, 2.8:1, 4.0:1, 8.0:1, 16.0:1, inf.:1
Select the compression ratio that will apply when the Threshold Level is exceeded. When using the effect as a
limiter, you will normally set this to “inf.:1.”
CL Atk (attack)
0.25 – 10.0 – 100.0 ms
Adjust the time from when the input level exceeds the threshold level to when the effect begins to apply. When
using the effect as a limiter, set a short Attack Time.
CL Rels (release)
50 – 500 – 5000 ms
Adjust the time from when the input level drops below the threshold level to when the effect ceases to apply.
When using the effect as a limiter, set a short Release Time.
CL Gain (gain)
-6 – 0– +18 dB
Adjusts the output gain.
CL Lev (level)
0 – +127
Adjusts the volume.
Input L
Input R
Output L
Output R
Noise
Suppressor Stereo
Flanger
Filter
Lo-Fi
Processor
Comp/
Limiter

16
Audio Multi-Effects
■Lo-Fi Processor
This cuts the high and low frequency range, and the frequencies for each range are freely adjustable. Or this
produces natural distortion like that obtained with older audio equipment or an AM radio. It’s ideal for creating
lo-fi sounds.
LF SW (switch)
Off, On
Turns the lo-fi saturator effect on/off.
LF Drive (drive)
0 – +8 – +127
Adjusts the amount of distortion.
LF Low (low cut)
UnLim, 40 – 1000 Hz
Adjusts the frequency above which the effect cut the high frequency range.
LF High (high cut)
1000 – 8000 Hz, UnLim
Adjusts the frequency below which the effect cut the low frequency range.
LF Gain (gain)
-12 – 0– +12 dB
Adjusts the output gain.
■Filter
This adjusts the brightness of the sound. You can significantly change the frequency response of the input sound
to brighten or darken the tone, or to add a unique character.
FT SW (switch)
Off, On
Turns the filter effect on/off.
FT Cutoff (cutoff frequency)
0 – 64 – +127
Adjusts the cutoff frequency.
FT Reso (resonance)
0 – 96 – +127
Determines the amount of resonance. Increasing the value will emphasize the effect, creating a more unusual
sound.
FT Accl (acceralation)
0 – +12 – +15
When adjusting FT Cutoff or FT Reso in real time, this determines the amount of time that is to pass before the
effect kicks in.

17
Audio Multi-Effects
■Noise Suppressor
The noise suppressor leaves the original sound unmodified, but mutes only the noise during the silent intervals.
NS SW (switch)
Off, On
Turns the noise suppressor effect on/off.
NS Thrsh (threshold level)
0 – +8 – +127
Adjusts the level at which the noise suppressor will begin to take effect. When the signal drops below the
specified level, it will be muted.
■Stereo Flanger
The flanging effect gives a twisting, jet-airplane-like character to the sound.
FL SW (switch)
Off, On
Turns the stereo flanger effect on/off.
FL Manu (manual)
0 – +64 – +127
Adjusts the center frequency at which the flanging effect will be applied.
FL Rate (rate)
0.05 – 0.20 – 10.00 Hz
Adjusts the rate at which flanger is modulated.
FL Depth (depth)
0 – +32 – +127
Adjusts the depth of modulation for the flanger.
FL Phase (phase)
0 – 180 deg
Adjusts the spatial spread of the sound.
FL Reso (resonance)
0 – +64 – +127
Determines the amount of resonance (feedback). Increasing the value will emphasize the effect, creating a more
unusual sound.
FL Bal (balance)
D100:0W – D75:25W – D0:100W
Adjust the balance between the effect sound volume and the direct sound volume.
FL Lev (level)
0 – +127
Adjusts the volume.

18
Audio Multi-Effects
■Other Parameters
Level (level)
0 – +127
Adjusts the volume of the effect output.

19
Audio Multi-Effects
Isolator
This cuts the level of individual frequency bands, thus eliminating unwanted sound portions. For example, you
may find it convenient to use this to extract a desired sound (e.g., drums or vocal) from a phrase taken from an
audio CD.
fig.4-13(isolator)
■Comp/Limiter
Depending on the setting of the parameters, this effect can be used as a compressor or as a limiter. A compressor
holds down high-level signals and boosts low-level signals, evening out the volume. A limiter is used when you
wish to hold down excessive input levels.
CL SW (switch)
Off, On
Turns the compressor limiter effect on/off.
CL Thrsh (threshold)
0 – +96 – +127
Adjusts the level at which the effect will begin to apply. To use this effect as a limiter, set a high Threshold Level.
CL Ratio (ratio)
1.0:1, 1.2:1, 1.5:1, 2.0:1, 2.8:1, 4.0:1, 8.0:1, 16.0:1, inf.:1
Select the compression ratio that will apply when the Threshold Level is exceeded. When using the effect as a
limiter, you will normally set this to “inf.:1.”
CL Atk (attack)
0.25 – 10.0 – 100.0 ms
Adjust the time from when the input level exceeds the threshold level to when the effect begins to apply. When
using the effect as a limiter, set a short Attack Time.
CL Rels (release)
50 – 500 – 5000 ms
Adjust the time from when the input level drops below the threshold level to when the effect ceases to apply.
When using the effect as a limiter, set a short Release Time.
CL Gain (gain)
-6 – +6 – +18 dB
Adjusts the output gain.
CL Lev (level)
0 – +127
Adjusts the volume.
Input L
Input R
Output L
Output R
Noise
Suppressor
Comp/
Limiter Pitch
Shifter
Isolator

20
Audio Multi-Effects
■Isolator
Divides the input sound into three frequency bands to abstract or eliminate the sound.
IS SW (switch)
Off, On
Turns the isolator on/off.
IS Low (low level)
0 – +127
Increases or decreases frequency bands in the low frequency band.
IS Mid (middle level)
0– +127
Increases or decreases frequency bands in the middle frequency band.
IS High (high level)
0 – +127
Increases or decreases frequency bands in the high frequency band.
IS Lev (level)
0 – +127
Adjusts the total volume.
■Noise Suppressor
The noise suppressor leaves the original sound unmodified, but mutes only the noise during the silent intervals.
NS SW (switch)
Off, On
Turns the noise suppressor effect on/off.
NS Thrsh (threshold level)
0 – +8 – +127
Adjusts the level at which the noise suppressor will begin to take effect. When the signal drops below the
specified level, it will be muted.