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Chapter 1. An overview of the RS-5/9
Basic Organization of the 
RS-5/9
The RS-5/9 can be broadly divided into two sections: a 
keyboard controller section and a sound generator 
section. The two sections are connected internally by means 
of MIDI.
fig.R01-01exp
Keyboard Controller Section
This section includes the keyboard, the Pitch Bend/
Modulation Lever, the panel knobs, and any pedal connected 
to the rear panel. Actions such as pressing and releasing of 
keys on the keyboard, depressing a pedal, and so forth, are 
converted to MIDI messages and sent to the sound generator 
section, or to an external MIDI device.
Sound Generator Section
The sound generator section produces the sound. Here, MIDI 
messages received from the keyboard controller section or 
external MIDI device are converted to musical signals, which 
are then output as analog signals from the OUTPUT and 
PHONES jacks.
Classification of RS-5/9 
Sound Types
When using the RS-5/9, you will notice that a variety of 
different categories come into play when handling sounds. 
What follows is a simple explanation of each sound category.
Tone
The individual sounds used when playing the RS-5/9 are 
referred to as “Tones.” The 640 Tones stored in the RS-5/9’s 
memory are divided into two types, with the memory 
containing 128 User Tones and 512 Preset Tones. Tones are 
assigned to each part of a performance.
Drum Set
Drum sets are groups of a number of different percussion 
instrument sounds. Since percussion instruments generally do 
not play melodies, there is no need for a percussion instrument 
sound to be able to play a scale on the keyboard. It is, however, 
more important that as many percussion instruments as 
possible be available to you at the same time. Therefore, the 
Drum sets are set up so that you can get different sets of 
percussion sounds by pressing different keys (note numbers). 
Drum sets are also assigned to each part of a performance.
fig.R01-02exp
Performance
A Performance is a collective set of assignments of the 
sixteen different Tones and Drum Sets. In Performances you 
can save whole collections of settings, including the tone 
numbers assigned to each of the Parts, along with Key Mode, 
Arpeggio, Transpose, and other settings.
Just like Tones, Performances are separated into two types, User and 
Preset, with 128 User Performances and 128 Preset Performances.
A maximum of two Parts can be handled simultaneously 
from the keyboard. Connecting an external sequencer allows 
you to work with up to sixteen Parts simultaneously, which 
lets you enjoy full ensemble performances.
fig.R01-03exp
Keyboard Controller Section (controllers 
such as keyboard, pitch bend lever, etc.)
Sound 
Generator 
Section
Play
Note Number 98 (D7)
Note Number 97 (C#7)
Note Number 36 (C2)
Note Number 35 (B1)
Percussion instrument sound
Drum Set
Performance
Part 16
Part 1
Tone/
Drum Set