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Internal Structure (System Overview)
132
Owner’s Manual
Basic Structure
Normal Voice and Drum Voice
Internally, there are two Voice Types: Normal Voices and Drum
Voices.
Normal Voices are mainly pitched musical instrument-type
sounds that can be played over the range of the keyboard.
Drum Voices are mainly percussion/drum sounds that are
assigned to individual notes on the keyboard. A collection of
assigned percussion/drum waves or Normal Voices is known
as a Drum Kit.
GM Voices
GM (General MIDI) is a worldwide standard for Voice
organization and MIDI functions of synthesizers and tone
generators. It was designed primarily to ensure that any song
data created with a specific GM device would sound virtually
the same on any other GM device—no matter the
manufacturer or the model. The GM Voice bank on this
synthesizer is designed to appropriately play back GM song
data. However, keep in mind that the sound may not be
exactly the same as played by the original tone generator.
Tone generator parameters that produce the
Voice sound
Among various parameters that makes up one Voice,
Oscillator, Pitch, Filter, Amplitude, LFO and three Envelope
Generators (PEG, FEG, AEG) shown in the illustration on
pages 132 – 134 are the basic parameters for creating the
Voice sound. Parameters related to Oscillator, Pitch, Filter and
Amplitude determine the three basic elements of the sound—
Pitch (how low or high it is), Tone (or its overall sound quality),
and Volume (how loud its volume level is) of the Voice.
Parameters such as LFO and EG (Envelope Generator)
determine the transition in these three basic elements of the
sound from the moment the sound starts to the moment the
sound stops.
In the sections that follow, we’ll explain in detail about the
sound-related parameters and provide an introduction to the
basics of electronic synthesis.
Oscillator
This unit outputs the wave which determines the basic pitch.
You can assign the wave (or basic sound material) to each
Element of the Normal Voice or each Key of the Drum Voice.
In the case of the Normal Voice, you can set the note range for
Element (the range of notes on the keyboard over which the
Element will sound) as well as the velocity response (the range
of note velocities within which the Element will sound). For
example, you could set one Element to sound in an upper
range of the keyboard, and another Element to sound in a
lower range. Thus, even within the same Voice, you can have
two different sounds for different areas of the keyboard or you
can make the two Element ranges overlap so that their sounds
are layered over a set range. Furthermore, you can set each
Element to respond to different velocity ranges so that one
Element sounds for lower note velocities, whereas another
Element sounds for higher note velocities.
n You can assign the wave with the following operation.
[VOICE] Voice selection [EDIT] Element selection/Drum
Key selection [F1] OSC [SF1] WAVE
Pitch
This unit controls the pitch of the sound (wave) output from the
Oscillator. In the case of the Normal Voice, you can detune
separate Elements, apply Pitch Scaling and so on. Also, by
setting the PEG (Pitch Envelope Generator), you can control
how the pitch changes over time.
PEG (Pitch Envelope Generator)
Using the PEG, you can control the transition in pitch from the
moment the sound starts the moment the sound stops. You
can create the PEG by setting parameters as illustrated below.
When you press a note on the keyboard, the pitch of the Voice
will change according to these envelope settings. This is
useful for creating automatic changes in pitch, which is
effective for example in synth brass sounds. Furthermore,
different PEG parameters can be set for each Element or each
Key.
Key 1 Key 5 Key 10 Key 18 Key 21 Key 73
C0
C1 C6
Waveform (Preset 1 – 1859)
Normal Voice
One Voice
Element 4
Element 1
Element 2
Element 3
Velocity
Individual drum sounds (different for each key)
Drum Voice
[VOICE] Voice selection [EDIT] Element selection/
Drum Key selection [F1] OSC
[VOICE] Voice selection [EDIT] Element selection/
Drum Key selection [F2] PITCH
0
Pitch
Hold
Level
Attack
Level
Decay1
Level
Sustain Level
(Decay2 Level)
Release
Level
Hold
Time
Attack
Time
Decay1
Time
Decay2
Time
Release
Time
Time
Pressing the key (Key on) Releasing the key (Key off)
132


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