#Menu
Click on a word:

\Reverb\              \Chorus\

\Filter\              \Volume\

\Pitch\               \Part\

\Control\             \LFO\
#Help
Double-click on a parameter in a window to get help.

In this Help Panel:
- click on a thickened (red) word to get help about this word,
- "Previous" gets back to previous panel,
- "Menu" displays general help panel,
- "Help ?" displays what you're seeing,
- "Quit" no comment...

You can move to \Menu\ by clicking this word.
#Reverb
Reverb type can be choosen in the SYSTEM window. It applies on all \Part\s.

There are 6 parameters for Reverb. More, there are 8 presets (Room 1, Hall 2...)
WARNING: Selecting a preset will change the 6 Reverb parameters.

Reverb can be adjusted for each \Part\.
More, for DRUM Parts, Reverb can be adjusted for each note.
#Chorus
Chorus type can be choosen in the SYSTEM window. It applies on all \Part\s.

There are 7 parameters for Chorus. More, there are 8 presets (Chorus 1, Flanger...)
WARNING: Selecting a preset will change the 7 Chorus parameters.

Chorus can be adjusted for each \Part\.
More, for DRUM Parts, Chorus can be adjusted for each note.
#Filter
Filter cuts high frequencies, if alters the sound spectrum.
Making lower its 'cutoff frequency' will cut more freqs. This cutoff frequency depends on:
- played note,
- an adjustment in the SYNTHE window,
- the action of \Control\s.
Controls may act directly on Filter, or make the \LFO\s act on Filter.
Resonance boosts frequencies near the cutoff frequency.
Filter is also called TVF (Time Variant Filter).
Don't get confuse with \Input\ filters in the FILTERS window. These are switches:
- ON allows a particular kind of MIDI message to be received,
- OFF rejects these messages.
#Volume
Volume sets amplification of sound.

It is ruled by many things:
- the Master Volume of SC-55,
- the volume of the \Part\,
- the volume of the note for DRUM Parts,
- the \velocity\ of the notes,
- the action of \Control\s.
Controls may act directly on the Volume, or make the \LFO\s act on Volume.

Volume is also called TVA (Time Variant Amplifier).
#Control
A Control is a special action that may change the sound (see \list\)

Examples: \Modulation\ wheel, Hold pedal, Breath Control on a DX7...
They are called by numbers from 0 to 127.

\Bender\ and \Aftertouch\ can be seen as Controls.

On what do Controls act?
For a number of them, you can choose yourself in the CONTROLS window.

Modulation, Bender, Aftertouch and 2 user-defined Controls (CC1, CC2) may act on \Pitch\,\Filter\,\Volume\ and \LFO\s.
#Pitch
Pitch deals with the sound ... pitch (lower/higher).

The Pitch depends on:
- the played note (C, C#...) of course,
- the Master Tuning of the SC-55,
- the Master Keyshift of the SC-55,
- the Pitch and Tune parameters of the \Part\,
- the parameters in the SCALING window,
- the Pitch parameter of the note for DRUM Parts,
- the action of \Control\s.
Controls may act directly on the Pitch, or make the \LFO\s act on the Pitch.
#Part
One Part = an \instrument\ + all associated parameters:
MIDI channel, \Volume\, \Pan\, \Pitch\, \Filter\, \Control\s action...

The Active Part is the one you're editing.
#Pan
Stereo placement of the sound.

L   = to the Left
R   = to the Right
RND = random: each note is placed with a random position.
#velocity
Velocity is the strength with wich the notes are played.

Normally, the more you play hard, the louder is the sound.
In fact, the SC-55 allows to edit the relation between the velocity of input notes and the level of the sound you hear.
2 parameters in the OTHERS window make that.

You can take a look at figures on page 38 of SC-55 Owner's Manual.
#Vibrato
The Vibrato is an effect that modulates the \Pitch\ of a note.
#LFO
Low Frequency Oscillator used to produce effects like \Vibrato\, tremolo...

Following SC-55 owner's manual, there are 2 LFOs used to produce internal sounds.
By editing CONTROLS window parameters, you can use \Control\s for:
- change a LFO frequency,
- make a LFO act on \Pitch\, \Filter\, \Volume\.
#Aftertouch
The Aftertouch is the pressure on the key.

there are 2 kinds of Aftertouch:
- Channel Aftertouch giving the mean pressure on keyboard (most common),
- Polyphonic Aftertouch giving the pressure for each key (more expensive!).

Though Aftertouch is not exactly a \Control\, it may be seen as such.

It may act on \Pitch\, \Filter\, \Volume\ and \LFO\s.
#Modulation
The Modulation is a \Control\ existing on every keyboard.
Normally, its effect is to modulate the \Pitch\ with a \LFO\.

In fact, its action on sound is given by the CONTROLS window parameters.
Modulation cant act on \Pitch\, \Filter\, \Volume\ and \LFO\s.
#Bender
The Bender is the wheel at the left of your keyboard, which normaly changes the \Pitch\.

In fact, its action on sound is given by the CONTROLS window parameters.
Bender may act on \Pitch\, \Filter\, \Volume\ and \LFO\s.

Though Bender is not exactly a \Control\, it may be seen as such.
#instrument
An instrument is choosen for each \Part\.

If the Part is in NORMAL mode, it's a harmonic instrument such as a piano or a bass.
If the Part is in DRUM mode, it's a percussion instrument such as STANDARD, ROOM...
In that last case, every note gives a different sound.
#Patch
The Patch is the set of all parameters.

The Patch can be saved on disk or send to the SC-55.
#Input
Input:
There are many kinds of MIDI messages: notes on, notes off, program changes, \Control\s, \Bender\...

The SC-55 gives parameters to select if one kind of message has to be taken into account or not.
These paramaters are filters that let go or stop MIDI messages accordind to their type.

Select:
- ON  to accept a type of message,
- OFF to reject that type.
#RPN
With RPN messages, you may set Data Entry \Control\ to act on given SC-55 parameters.

First, you need to send a RPN MIDI message to select which parameter will be concerned. Then, send Data Entry messages to change that parameter.
Of course, you need for that a master keyboard or a sequencer able to generate Data Entry messages.

The RPN numbers are defined in the MIDI standards, they are identical for every synths.
On the  SC-55, 3 paramaters can be selected (owner's manual p.75)
#NRPN
With NRPN messages, you may set Data Entry \Control\ to act on given SC-55 parameters.

First, you need to send a NRPN MIDI message to select which parameter will be concerned. Then, send Data Entry messages to change that parameter.
Of course, you need for that a master keyboard or a sequencer able to generate Data Entry messages.

The NRPN numbers are defined for each synth.
On the SC-55, 13 parameters can be selected: those of the SYNTH window and those of the DRUM windows (owner's manual p.75)
#0
Master Tune  of the , range from 415 to 466 Hz.

This parameter changes the \Pitch\ of all \Part\s.
Press Left Shift Key to fasten motion.
#1
Master \Volume\ of the SC-55.

All \Part\s are concerned.
#2
Master Keyshift.

Half-tone by half-tone.
\Pitch\ of all \Part\s is concerned.
#3
Master \Pan\ of the SC-55.
#4
\Reverb\ presets:

this parameter offers some preset configurations for the 6 Reverb parameters.
#5
\Reverb\ type:

this type, ranging from 0 to 7, corresponds to the 8 presets (Room 1, Hall 1...)
#6
Low Pass Filter at the \Reverb\ input.
#7
\Reverb\ Master mix.
#8
Reverb time.

Short or long \Reverb\...
#9
Feedback:

loops the \Reverb\ ouput to the input.
#10
Send \Reverb\ to \Chorus\.
#11
\Chorus\ presets:

this parameter offers some preset configurations for the 7 Chorus parameters.
#12
Low Pass Filter at the \Chorus\ input.
#13
\Chorus\ Master mix.
#14
Feedback:

loops the \Chorus\ ouput to the input.
#15
\Chorus\ delay.
#16
\Chorus\ rate.
#17
\Chorus\ depth.
#18
Send \Chorus\ to \Reverb\.
#20
Selection of the \instrument\ for that \Part\.

if MODE = NORMAL:
    click -> SC-55 menu
ALT-click -> MT-32 menu

if MODE = DRUM1 or DRUM 2:
 click -> percussion instruments menu.
#21
MIDI channel.

This \Part\ receives on this channel.
#22
\Part\ mode:

NORMAL : harmonic \instrument\s
DRUM   : percussion instruments
#23
Keyshift for that \Part\.

half-tone steps.
It's a part of the \Pitch\.
#24
\Volume\ for that \Part\.
#25
\Pan\ for that \Part\.
#26
\Chorus\ level for that \Part\.
#27
\Reverb\ level for that \Part\.
#28
Number of partials reserved for that \Part\.

Total number of partials reserved for all Parts cannot exceed 24.
#29
Mono/Poly mode:

MONO: one note at a time
POLY: several notes
#30
Assign Mode

(have you heard about that ?)
#31
Fine tuning, from -12 to +12 Hz.

This acts on \Pitch\.
#32
\velocity\ sensitivity.

High values give a more dynamic sound.
#33
\velocity\ offset.

When greater than 64, keyboard is dynamic when played smoothly.
When lower than 64, keyboard is dynamic when played with strength.
#34
Lowest note played.

This \Part\ doesn't play notes lower than this one.
#35
Highest note played.

This \Part\ doesn't play notes higher than this one.
#36
CC1 \Control\ selection, for that \Part\.

Select 'CC1' in the menu at the top of the CONTROLS window.

Then, set how your CC1 acts on \Pitch\, \Filter\, \Volume\, \LFO\s.
#37
CC2 \Control\ selection, for that \Part\.

Select 'CC2' in the menu at the top of the CONTROLS window.

Then, set how your CC2 acts on \Pitch\, \Filter\, \Volume\, \LFO\s.
#38
\Vibrato\ frequency.
#39
\Vibrato\ amplitude.
#40
\Filter\ cutoff frequency.
#41
\Filter\ resonance.
#42
Envelope Attack.

High values give slowly raising sounds.
#43
Envelope Decay.

After the Attack time, the sound begins Decay time. Slow or fast ?
#44
Envelope Release.

High values give slowly disappearing sound, once the key has been released.
#45
\Vibrato\ delay.

To delay the raising of Vibrato.
#46
Action of \Modulation\ on \Pitch\.

-24 to +24 half-tones.
#47
Action of \Modulation\ on \Filter\ cutoff frequency.

-9600 to +9450 cents
#48
Action of \Modulation\ on \Volume\.

-100 to +100 %
#49
Action of \Modulation\ on \LFO\1 rate.

-10 to +10 Hz
#50
Action of \Modulation\ on the action of \LFO\1 on \Pitch\...

0 to 600 cents

This parameter is called 'Modulation Depth' on the SC-55.
#51
Action of \Modulation\ on the action of \LFO\1 on \Filter\...

0 to 600 cents
#52
Action of \Modulation\ on the action of \LFO\1 on \Volume\...

0 to 100 %
#53
Action of \Modulation\ on \LFO\2 rate.

-10.0 to +10.0 Hz
#54
Action of \Modulation\ on the action of \LFO\2 on \Pitch\...

0 to 600 cents
#55
Action of \Modulation\ on the action of \LFO\2 on \Filter\...

0 to 2400 cents
#56
Action of \Modulation\ on the action of \LFO\2 on \Volume\...

0 to 100 %
#57
Action of \Bender\ on \Pitch\.

-24 to +24 half-tones.

This is also called 'Bender Range'
#58
Action of \Bender\ on \Filter\ cutoff frequency.

-9600 to +9450 cents
#59
Action of \Bender\ on \Volume\.

-100 to +100 %
#60
Action of \Bender\ on \LFO\1 rate.

-10 to +10 Hz
#61
Action of \Bender\ on the action of \LFO\1 on \Pitch\...

0 to 600 cents
#62
Action of \Bender\ on the action of \LFO\1 on \Filter\...

0 to 600 cents
#63
Action of \Bender\ on the action of \LFO\1 on \Volume\...

0 to 100 %
#64
Action of \Bender\ on \LFO\2 rate.

-10.0 to +10.0 Hz
#65
Action of \Bender\ on the action of \LFO\2 on \Pitch\...

0 to 600 cents
#66
Action of \Bender\ on the action of \LFO\2 on \Filter\...

0 to 2400 cents
#67
Action of \Bender\ on the action of \LFO\2 on \Volume\...

0 to 100 %
#68
Action of channel \Aftertouch\ on \Pitch\.

-24 to +24 half-tones.
#69
Action of channel \Aftertouch\ on \Filter\ cutoff frequency.

-9600 to +9450 cents
#70
Action of channel \Aftertouch\ on \Volume\.

-100 to +100 %
#71
Action of channel \Aftertouch\ on \LFO\1 rate.

-10 to +10 Hz
#72
Action of channel \Aftertouch\ on the action of \LFO\1 on \Pitch\...

0 to 600 cents
#73
Action of channel \Aftertouch\ on the action of \LFO\1 on \Filter\...

0 to 600 cents
#74
Action of channel \Aftertouch\ on the action of \LFO\1 on \Volume\...

0 to 100 %
#75
Action of channel \Aftertouch\ on \LFO\2 rate.

-10.0 to +10.0 Hz
#76
Action of channel \Aftertouch\ on the action of \LFO\2 on \Pitch\...

0 to 600 cents
#77
Action of channel \Aftertouch\ on the action of \LFO\2 on \Filter\...

0 to 2400 cents
#78
Action of channel \Aftertouch\ on the action of \LFO\2 on \Volume\...

0 to 100 %
#79
Action of poly \Aftertouch\ on \Pitch\.

-24 to +24 half-tones.
#80
Action of poly \Aftertouch\ on \Filter\ cutoff frequency.

-9600 to +9450 cents
#81
Action of poly \Aftertouch\ on \Volume\.

-100 to +100 %
#82
Action of poly \Aftertouch\ on \LFO\1 rate.

-10 to +10 Hz
#83
Action of poly \Aftertouch\ on the action of \LFO\1 on \Pitch\...

0 to 600 cents
#84
Action of poly \Aftertouch\ on the action of \LFO\1 on \Filter\...

0 to 600 cents
#85
Action of poly \Aftertouch\ on the action of \LFO\1 on \Volume\...

0 to 100 %
#86
Action of poly \Aftertouch\ on \LFO\2 rate.

-10.0 to +10.0 Hz
#87
Action of poly \Aftertouch\ on the action of \LFO\2 on \Pitch\...

0 to 600 cents
#88
Action of poly \Aftertouch\ on the action of \LFO\2 on \Filter\...

0 to 2400 cents
#89
Action of poly \Aftertouch\ on the action of \LFO\2 on \Volume\...

0 to 100 %
#90
Action of CC1 \Control\ on \Pitch\.

-24 to +24 half-tones.
#91
Action of CC1 \Control\ on \Filter\ cutoff frequency.

-9600 to +9450 cents
#92
Action of CC1 \Control\ on \Volume\.

-100 to +100 %
#93
Action of CC1 \Control\ on \LFO\1 rate.

-10 to +10 Hz
#94
Action of CC1 \Control\ on the action of \LFO\1 on \Pitch\...

0 to 600 cents
#95
Action of CC1 \Control\ on the action of \LFO\1 on \Filter\...

0 to 600 cents
#96
Action of CC1 \Control\ on the action of \LFO\1 on \Volume\...

0 to 100 %
#97
Action of CC1 \Control\ on \LFO\2 rate.

-10.0 to +10.0 Hz
#98
Action of CC1 \Control\ on the action of \LFO\2 on \Pitch\...

0 to 600 cents
#99
Action of CC1 \Control\ on the action of \LFO\2 on \Filter\...

0 to 2400 cents
#100
Action of CC1 \Control\ on the action of \LFO\2 on \Volume\...

0 to 100 %
#101
Action of CC2 \Control\ on \Pitch\.

-24 to +24 half-tones.
#102
Action of CC2 \Control\ on \Filter\ cutoff frequency.

-9600 to +9450 cents
#103
Action of CC2 \Control\ on \Volume\.

-100 to +100 %
#104
Action of CC2 \Control\ on \LFO\1 rate.

-10 to +10 Hz
#105
Action of CC2 \Control\ on the action of \LFO\1 on \Pitch\...

0 to 600 cents
#106
Action of CC2 \Control\ on the action of \LFO\1 on \Filter\...

0 to 600 cents
#107
Action of CC2 \Control\ on the action of \LFO\1 on \Volume\...

0 to 100 %
#108
Action of CC2 \Control\ on \LFO\2 rate.

-10.0 to +10.0 Hz
#109
Action of CC2 \Control\ on the action of \LFO\2 on \Pitch\...

0 to 600 cents
#110
Action of CC2 \Control\ on the action of \LFO\2 on \Filter\...

0 to 2400 cents
#111
Action of CC2 \Control\ on the action of \LFO\2 on \Volume\...

0 to 100 %
#112
\Input\ filter for \Bender\.
#113
\Input\ filter for channel \Aftertouch\.
#114
\Input\ filter for Program Changes.
#115
\Input\ filter for all \Control\s.
#116
\Input\ filter for poly \Aftertouch\.
#117
\Input\ filter for notes.

OFF =  MUTE
#118
\Input\ filter for Registered Parameter Number  (\RPN\)
#119
\Input\ filter for Non Registered Parameter Number (\NRPN\)
#120
\Input\ filter for \Modulation\ \Control\.
#121
\Input\ filter for \Volume\ \Control\.
#122
\Input\ filter for \Pan\ \Control\.
#123
\Input\ filter for Expression \Control\.
#124
\Input\ filter for Hold1 \Control\.
#125
\Input\ filter for Portamento \Control\.
#126
\Input\ filter for Sostenuto \Control\.
#127
\Input\ filter for Soft \Control\.
#128
Scaling (C)
#129
Scaling (C#)
#130
Scaling (D)
#131
Scaling (D#)
#132
Scaling (E)
#133
Scaling (F)
#134
Scaling (F#)
#135
Scaling (G)
#136
Scaling (G#)
#137
Scaling (A)
#138
Scaling (A#)
#139
Scaling (B)
#140
Keyshift for that note.

This changes the \Pitch\.
#141
\Volume\ of that note.
#142
Assign: notes set to the same value cannot be played at same time.

Good for open hi-hat/closed hi-hat, for example.
#143
\Pan\ for that note.
#144
Percentage of \Reverb\

relative to the Reverb level set for that \Part\ in the MAIN window.
#145
Percentage de \Chorus\

relative to the Chorus level set for that \Part\ in the MAIN window.
#146
Note off \Input\ filter.
#147
Note on \Input\ filter.
#150
\Patch\ Name.
#list
List of major \Control\s:
  1:\Modulation\         2:Breath Ctrl
  4:Foot Ctrl          5:Portamento time
  6:Data Entry         7:Volume
  8:Balance           10:\Pan\
 11:Expression     16-19:General Purpose 1-4
         32-63:LSB of Ctrls 0-31
 64:Hold1             65:Portamento
 66:Sostenuto         67:Soft Ped
 69:Hold2          80-83:General Purpose 5-8
 92:Tremolo Depth     93:Chorus Depth
 94:Celeste Depth     95:Phaser Depth
 96:Data increment    97:Data decrement
 98:\NRPN\ MSB          99:NRPN LSB
100:\RPN\ MSB          101:RPN LSB
121:Reset all Ctrls  122:Local Ctrl
123:All Notes Off    124:Omni Off
125:Omni On          126:Mono On
127:Poly On
