Creating a patch, How a patch is organized, For information on tones, see p. 44 – Kenwood XV-2020 User Manual

Page 44: How a tone is organized, Wg (wave generator), Tvf (time variant filter), Tva (time variant amplifier), Envelope

Creating a Patch

How a Patch Is Organized

The type of sound most commonly played on the XV-2020 is called a

Patch

. Each Patch can contain up to

four Tones.

fig.1-01.e

You can turn the Tones in a Patch on or off. Only Tones that are turned on are heard when you play the
Patch. (p. 45)
You can also set the structure of a Patch to specify how Tones 1 and 2 and Tones 3 and 4 are combined. (p.
48)

How a Tone Is Organized

Tones are the smallest programmable unit of sound on the XV-2020, and are the basic building blocks that
make up a Patch. You can’t play a Tone by itself—it can only be played as part of a Patch or Rhythm Set.
A Tone consists of the following five components.

fig.1-02.e

WG (Wave Generator)

This selects the PCM waveform material that provides the basis of the Tone. Two waveforms can be
assigned to each Tone.
The XV-2020 has 1083 different waveforms. (See Waveform List p. 121.)
All Patches built into the XV-2020 consist of combinations of Tones based on these waveforms.

TVF (Time Variant Filter)

This specifies how the frequency components of the Tone change.

TVA (Time Variant Amplifier)

This determines how the volume and panning of the Tone change.

Envelope

An envelope applies changes to the 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 Tone
attacks and decays.

Example 1:A Patch consisting of only one Tone
(Tones 2–4 are turned off).

Example 2: A Patch consisting of four Tones.

Tone

Pitch

Envelope

TVF

Envelope

TVA

Envelope

TVA

LFO 1

LFO 2

Tone

audio signal

control signal