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Basic Structure
Internal Structure (System Overview)
112
Owner’s Manual
■ 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 112 - 114 are the basic parameters for creating the Voice sound.
Parameters about 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.
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)