54
Chapter 2. Creating a Rhythm Set
How Percussion Instruments
Are Organized
A Rhythm Set is a collection of Rhythm Tones, each of which
represents a percussion instrument played on a single key. An
instrument consists of the following four elements.
fig.2-01.e
WG (Wave Generator)
This specifies the PCM waveform (or “wave”) that forms the basis of
the Rhythm Tone - four waveforms can be assigned to each Rhythm
Tone. You can also determine how the pitch of the Rhythm Tone will
change.
The XV-5050 has 1083 different waveforms. (See Waveform List p.
168.)
All Rhythm Sets built into the XV-5050 consist of Rhythm Tones
based on these waveforms.
TVF (Time Variant Filter)
This sets how the frequency characteristics of the Rhythm Tone will
change.
TVA (Time Variant Amplifier)
This sets how the Rhythm Tone’s volume and stereo positioning will
change.
Envelope
An envelope applies changes to the Rhythm Tone over time. There
are separate envelopes for pitch, TVF (filter) and TVA (volume). For
example, you would use the TVA Envelope to modify the way in
which the Rhythm Tone attacks and decays.
Using MIDI Keyboard to Select
a Percussion Instrument for
Editing
You can set whether you’ll be able to select percussion instruments
for editing only by operating the XV-5050’s front-panel controls or
also by pressing keys on a connected MIDI keyboard.
1.
Press [SYSTEM] to make its indicator light.
2.
Press [ CURSOR] a few times to move the cursor to the
parameter group in the upper line of the display.
fig.2-02.e
3.
Turn [VALUE] to choose "GENERAL."
4.
Press [CURSOR ] to move the cursor to the parameter at
the lower left of the display.
5.
Turn [VALUE] to choose "Rhy EditKey."
6.
Press [CURSOR ] to move the cursor to the value.
7.
Turn [VALUE] to select the desired setting.
PANEL:
Percussion instrument sounds can be selected only by
using the XV-5050’s TONE SW [1]–[4].
PANEL&MIDI:
Percussion instrument sounds can be selected
using the XV-5050’s TONE SW [1]–[4] or by pressing a key on a
connected MIDI keyboard.
8.
Press [EXIT] to return to the previous screen.
For example, if you wish to use the MIDI keyboard to preview
the percussion sound, choose "PANEL."
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
ValueParameter
Parameter Group
XV-5050_e.book 54 ページ ２００３年６月２７日 金曜日 午後３時１４分
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