Roland XV-88 Manuale Utente

When using the XV-88, you will notice that a variety of 
different categories come into play when handling sounds. 
What follows is a simple explanation of each sound category.

In the XV-88, the Tone is the smallest class of sound. 
However, it is not possible to play a Tone by itself. The Patch 
is the unit of sound which can be played, and the Tones are 
the basic building blocks which make up the Patch.

fig.01-03.e

Tones consist of the following five components.

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 Patches 
built into the XV-88 consist of combinations of Tones which 
are created based on these waveforms.

There are four wave generators for each Rhythm Tone 
(percussion instrument sounds).

Specifies how the frequency components of the sound will 
change.

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

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.

Use the LFO to create cyclic changes (modulation) in a 
sound. The XV-88 has two LFOs. Either one or both can be 
applied to effect the WG (pitch), TVF (filter) and/or TVA 
(volume). When an LFO is applied to the WG pitch, a vibrato 
effect is produced. When an LFO is applied to the TVF cutoff 
frequency, a wah effect is produced. When an LFO is applied 
to the TVA volume, a tremolo effect is produced.

LFO is not included in the Rhythm Tones (percussion 
instrument sounds).

Patches are the basic sound configurations that you play 
during a performance. Each Patch can be configured by 
combining up to four Tones. How the four Tones are 
combined is determined on the STRUCT page (PATCH/
COMMON) (p. 73).

fig.01-04.e