Roland XV-88 owner manual Creating Rhythm Sets, How a Rhythm Set Is Organized

Chapter 6. Creating Rhythm Sets

With the XV-88, you have total control over a wide variety of settings. Each item that can be set is known as a parameter. When you change the values of parameters, you are doing what is referred to as Editing. This chapter explains the procedures used in creating Rhythm Sets, and the functions of the Rhythm Set parameters.

How a Rhythm Set Is

Organized

A Rhythm Set is a grouping of percussion instruments

(Rhythm Tones).

fig.01-05.e

Rhythm Set

Note Number 98 (D7)

Note Number 97 (C#7)

Note Number 36 (C2)

Note Number 35 (B1)

Rhythm Tone (Percussion instrument sound)

	WG		TVF		TVA
	Pitch		TVF		TVA
Envelope		Envelope		Envelope

A percussion instrument (Rhythm Tones) consists of the following four elements.

WG (Wave Generator)

Specifies the PCM waveform (wave) that is the basis of the sound, and determines how the pitch of the sound will change. The XV-88 has 1,083 different waveforms (p. 263). All Rhythm Sets built into the XV-88 consist of combinations of Rhythm Tones based on these waveforms.

A Rhythm Tone (percussion instrument) has four wave generators.

TVF (Time Variant Filter)

Specifies how the frequency components of the sound will change.

TVA (Time Variant Amplifier)

Specifies the volume changes and the sound’s position in a stereo soundfield.

Envelope

You use Envelope to initiate changes to occur to a sound over time. There are separate envelopes for Pitch, TVF (filter), and TVA (volume). For example if you wish to modify the way in which the sound attacks or decays over time, you would adjust the TVA envelope.

How to Make the Rhythm Set Settings

Start with an existing Rhythm Set and edit it to create a new Rhythm Set. Rhythm Sets are created from a collection of multiple Rhythm Tones (percussion instruments). You can change the assignments of the Rhythm Tones for each key with Rhythm Set Edit.

1.Press [RHYTHM] to access the RHYTHM PLAY page, and select the Rhythm Set whose settings you wish to modify (p. 39).

You cannot edit the Rhythm Sets in the PR-H (GM2) group.

If you want to create all your Rhythm Sets from the ground up, rather than the Rhythm Sets that have already been prepared, carry out the Initialize operation (p. 185).

2.Press [EDIT] to make its indicator light.

3.Use the function buttons to select a display group.

The indicator for the button of the selected display group

begins blinking.

fig.06-01

Since Rhythm Sets do not have an LFO, it will not be possible to select the LFO group.

4.Use or to select a display page.

5.If you have selected a parameter display that can be set independently for each key (Rhythm Tone), the key selected for editing will be shown in the upper left of the display. To select a different key (Rhythm Tone), play the

desired key on the keyboard.

fig.06-02

If the [EDIT] indicator is turned off, you can also use TONE SELECT [1]–[4] to select the displayed key. TONE SELECT [1]: move to an octave lower key TONE SELECT [2]: move to the semitone below TONE SELECT [3]: move to the semitone above TONE SELECT [4]: move to an octave higher key

Chapter 6

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