Reference Manual
Basic Structure
6
Basic Structure
Functional Blocks
Tone Generator
A/D Input
Arpeggio
Sequencer
Audio Record/Play
Controller
Effect
Internal Memory
Reference
Voice
Performance
Multi
SEQ Play
Master
Remote
File
Audio Rec/Play
Utility
Appendix
About MIDI
Display Messages
Troubleshooting
LFO (Low Frequency Oscillator)
As its name suggests, the LFO produces a low frequency wave.
These waves can be used to vary the pitch, filter or amplitude of each Element to create effects such as
vibrato, wah and tremolo. LFO can be set independently for each Element; it can also be set globally for
all Elements. The LFO parameters can be set from the S90 XS/S70 XS Editor.
For details, refer to pages 40
and
56
.
Normal Voice
Preset Banks 1 – 8 1024 Normal Voices (128 Voices for each Bank)
GM Bank 128 Voices
User Banks 1 – 4 512 Voices (128 Voices for each Banks)
Drum Voice
Preset Drum Bank 64 Voices
GM Drum Bank 1 Voice
User Drum Bank 32 Voices
Tone Generator Block in the Performance Mode
In this mode, the tone generator block receives MIDI data over a single channel. This status is referred
to as a “single timbre” tone generator. This mode lets you play a Performance (which multiple Voices
(Parts) are combined—in a layer, or in other configurations) using the keyboard. Keep in mind that song
data on an external sequencer consisting of multiple MIDI channels will not play back properly in this
mode. If you are using an external MIDI sequencer or computer to play the instrument, make sure to use
the Multi mode.
A program in which multiple Voices (Parts) are combined in a layer, or in other configurations is referred
to as a “Performance.” Each Performance can contain up to four different Parts (Voices). Each
Performance can be created by editing parameters unique to each Part and parameters common to all
the Parts in the Performance mode (page 69).
Four User Banks are provided. Each Bank contains 128 Performances. Accordingly, a total of 512 User
Performances are provided.
Tone Generator Block in the Multi Mode
The Multi mode lets you use 16 Parts and assign different Voices to be played back for each Part. Since
different MIDI channels can be set for each Part of the tone generator block, you can use an external
MIDI sequencer or computer to play the sounds. The sequence data of each track plays the
corresponding Parts (those having the same MIDI channel assignment) in the tone generator block. A
MIDI tone generator that simultaneously receives over multiple MIDI channels and plays multiple
instrument Parts is referred to as a “multi-timbral” tone generator.
To play the tone generator block in the Multi mode, set the Port of the external sequencer to 1 then set
the MIDI Receive Channel of each Part as “Receive Ch” (page 101) in the Voice display of the Multi Part
Edit.
Memory structure of Voice
Part structure in the Performance mode
Performance
Memory structure of Performance
Part structure in the Multi mode
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