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Chapter 1. Overview of the XV-88
Chapter 1
Number of Voices
The XV-88 is able to play up to 128 notes simultaneously. The
following paragraphs discuss what this means, and what will
happen when more than 128 simultaneous voices are
requested from the XV-88.
Calculating the Number of Voices
Being Used
The XV-88 is able to play up to 128 notes simultaneously. The
polyphony, or the number of voices (sounds) does not refer
only to the number of sounds actually being played, but
changes according to the number of tones used in the
Patches, and the number of Waves used in the tones. The
following method is used to calculate the number of sounds
used for one Patch being played.
(Number of Sounds Being Played) x (Number of Tones Used by
Patches Being Played) x (Number of Waves Used in the Tones)
For example, with a Patch combining four tones, each of
which uses two Waves, the actual number of sounds being
played comes to 16. If you are using the XV-88 in
Performance mode to play an ensemble, count the total
number of Tones used by all the Parts using the following
formula.
How a Patch Sounds
When the XV-88 is requested to play more than 128 voices
simultaneously, currently sounding notes will be turned off
to make room for newly requested notes. The note with the
lowest priority will be turned off first. The order of priority is
determined by the Voice Priority setting.
Voice Priority can be set either to LAST or LOUDEST. When
LAST is selected, a newly requested note that exceeds the 128
voice limit will cause the first-played of the currently
sounding notes to be turned off. When LOUDEST is selected,
the quietest of the currently sounding notes will be turned
off. Normally, you will set Voice Priority to LAST.
Note Priority in Performance Mode
Since Performance mode is usually used to play an ensemble
consisting of several Patches, it is important to decide which
Parts take priority. Priority is specified by the Voice Reserve
settings. When a note within a Patch needs to be turned off to
make room for a new note, the Voice Priority setting of the
Patch will apply.
Voice Reserve
The XV-88 has a Voice Reserve function that lets you
reserve a minimum number of notes that will always be
available for each Part. For example if Voice Reserve is set to
10 for Part 16, Part 16 will always have 10 notes of sound-
producing capacity available to it even if a total of more than
128 notes (total for all Parts) are being requested. When you
make Voice Reserve settings, you need to take into account
the number of notes you want to play on each Part as well as
the number of Tones used by the selected Patch. (p. 53)
It is not possible to make Voice Reserve settings that
would cause the total of all Parts to be greater than 64
voices.