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21
Chapter 1. Overview of the XV-88
Chapter 1
Rhythm Sets
A Rhythm Set is a grouping of percussion instruments
(Rhythm Tones). Since percussion instruments generally do
not play melodies, there is no need for a percussion
instrument sound to be able to play a scale on the keyboard.
It is, however, more important that as many percussion
instruments as possible be available to you at the same time.
Therefore, each key (note number) of a Rhythm Set will
produce a different percussion instrument.
fig.01-05.e
Percussion instrument (Rhythm Tone) consists of the
following four elements. (For details, refer to the
explanations for “Tones.”)
WG (Wave Generator)
TVF (Time Variant Filter)
TVA (Time Variant Amplifier)
Envelope
Performances
A Performance is a collective set of assignments of the
sixteen different Patches and Rhythm Sets. Since a
Performance can simultaneously handle 16 different sounds,
it allows you to play multiple Patches simultaneously (layer)
or to play different Patches in different areas of the keyboard
(split), and to create ensembles.
Because the XV-88 sound generator can control multiple
sounds (instruments) it is called a Multi-timbral sound
generator.
fig.01-06.e
Parts
Parts are the “sites” to which the Patches and Rhythm Sets
used by the XV-88 as sound material are assigned. A single
Performance comprises sixteen Parts, with a Patch or
Rhythm Set being assigned to each Part.
In the relationship between Performances and Parts, the
Performance is like an orchestra, the Parts the performers,
and the Patches and Rhythm Sets the instruments.
Note Number 98 (D7)
Note Number 97 (C#7)
Note Number 36 (C2)
Note Number 35 (B1)
Rhythm Tone (Percussion instrument sound)
Rhythm Set
WG
Pitch
Envelope
TVF
TVF
Envelope
TVA
Envelope
TVA
Performance
Part 16
Part 1
Patch/
Rhythm Set