Overview Of The S90; Controller; Tone Generator - Yamaha S90 Owner's Manual

Overview of the S90

The S90 has a wide variety of advanced and convenient features. This section gives you an overview of these
features. The following diagram shows the various component sections or "blocks" of the S90.
Memory Card
Song
S90
(SMF)
Data
File

Controller

This block consists of the keyboard, Pitch Bend and Modulation wheels, Control Sliders, and so on (page 53).
The keyboard itself doesn't generate sounds, but instead sends note, velocity and other information to the S90's tone
generator section for the notes you play. The controllers also send non-note performance data. Information from the
keyboard and controllers can be transmitted to other external MIDI devices through the MIDI OUT connector.

Tone Generator

This block plays back sounds according to information received from the keyboard and controllers. The following
example illustrates the path taken by the signal from an Element in the Voice Mode (page 26).
Tone Generator
OSC
(Oscillator)
Outputs the waveform of each
Element. Each Voice consists of up to
four Elements.
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Overview of the S90
Keyboard
Load
Save
Sequencer
(Playback)
Controls the pitch of each Element
output from the OSC section.
PITCH
Controller
Controllers
Tone Generator
Reverb
AWM2
Plug-in Board
Chorus
Arpeggiator
Variation
Controls the output level (amplitude) of
each Element output from the FILTER
section. The signals are then sent at this
level to the Effects Unit.
AMP
FILTER
(Amplitude)
Changes the tonal quality of each
Element output from the PITCH section.
MIDI OUT
Effect
Insertion 1
Output
Insertion 2
Master Equalizer
To Effects units