Yamaha S90 ES Owner's Manual page 110

Internal Structure (System Overview)
The illustration below shows the structure and interrelationship of the Voices, Performances, and Multis.
One Voice
VOICE
Up to four elements (Normal Voice)
Up to 73 keys (Drum Voice)
One Part
Voice
Common Edit parameters
Set in the Voice Edit mode (page 44)
Element Edit parameters
or Key Edit parameters
OSC
(Oscillator)
Waveform
(AWM2)
Outputs the
wave that makes
up the sound.
n
The Drum Voice Key Edit parameters do not contain LFO settings.
Keyboard Mega Voices
Normal Voices use velocity switching to make the sound quality and/or level of a Voice change according to how strongly or softly you
play it.
This makes the Voices sound authentic and natural. However, with Keyboard Mega Voices, each velocity range (the measure of your
playing strength) has a completely different sound. For example, a guitar Voice includes the sounds of various performance techniques.
In conventional instruments, different Voices having those sounds would be called up via MIDI and played in combination to achieve the
desired effect.
Now with Keyboard Mega Voices, a convincing guitar Part can be played with just a single Voice, using specific velocity values to play
the desired sounds.
n
The Keyboard Mega Voice names are indicated as "Mega **" in the display.
110
Owner's Manual
One Performance
VOICE
Up to four parts
Part Edit parameters
Different Voice for each part
LFO
Low Frequency
Oscillator
PITCH FILTER
Changes the
Controls the
tonal quality of
pitch of the
the sound
sound.
output from
the PITCH
unit.
EG
PEG FEG
Pitch Envelope
Filter Envelope
Generator
Generator
Element 1 - 4
or Key C0-C6
Common Edit parameters
Arpeggio, Effects, Controller Set, etc.
MULTI/
SEQ PLAY
One Part
Part Edit parameters
Voice
Common Edit parameters
AMP
(Amplitude)
Controls the output level
(amplitude) of the sound
output from the FILTER
unit. The signals are
then sent at this level to
the Effect block.
AEG
Amplitude Envelope
Generator
One Multi
• Parts 1 - 16 (of the internal tone generator)
• Parts 17 - 32 (of the optionally installed
PLG100-XG)
• Parts PLG 1 - 3 (of the optionally installed
single part Plug-in boards)
CH1
CH16
Different Voice for each part