Chapter 1 Creating A Patch; How A Patch Is Organized; How A Tone Is Organized; Tips For Creating A Patch - Roland XV-5050 Owner's Manual

Chapter 1 Creating a Patch

How a Patch Is Organized

The type of sound most commonly played on the XV-5050 is called a
Patch. Each Patch can contain up to four Tones.
fig.1-01.e
Tone Tone Tone
1 2 3
Example 1:A Patch consisting of only one Tone
(Tones 2—4 are turned off).
Tone Tone
Tone
1
2 3
Example 2: A Patch consisting of four Tones.
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. 39)
You can also set the structure of a Patch to specify how Tones 1 and 2
and Tones 3 and 4 are combined. (p. 41)

How a Tone Is Organized

Tones are the smallest programmable unit of sound on the XV-5050,
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
Tone
LFO 1
WG TVF
Pitch TVF
Envelope Envelope
audio signal
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-5050 has 1083 different waveforms. (See Waveform List p.
138.)
All Patches built into the XV-5050 consist of combinations of Tones
based on these waveforms.
38
Tone
4
Tone
4
LFO 2
TVA
TVA
Envelope
control signal
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.
LFO (Low Frequency Oscillator)
Use the LFO to create cyclical changes—or cyclical "modulation"—
in a Tone. Each Tone has two LFOs. An LFO can be applied to the
Tone's pitch settings, TVF (filter), and TVA (volume). When an LFO
is applied to pitch, a vibrato effect is produced. When an LFO is
applied to the TVF cutoff frequency, a wah-wah effect is produced.
When an LFO is applied to the TVA volume, a tremolo effect is
produced.

Tips for Creating a Patch

• Choose a Patch that's similar to the sound you wish to create.
When you want to create a new sound, it's a good idea to begin
with a Patch that's close to the sound that you have in mind.
Starting with a Patch that bears no resemblance to the one you
want to create is likely to result in much more programming
work for you. (Choosing a Patch (p. 21))
• Decide which Tones will sound
When creating a Patch, it's important to decide which Tones you
want to use. It's also important to turn off unused Tones to avoid
wasting voices, unnecessarily reducing the number of
simultaneous notes you can play. (See "Choosing the Tones That
Sound" (p. 39).)
• Check the way in which the Tones are combined
Structure Type 1&2 and 3&4 are important parameters that
determine how the four Tones are combined. Before you select
new Tones, make sure you understand how the currently
selected Tones are affecting each other. (p. 41)
• Turn off effects
Since the XV-5050 effects have such a profound impact on its
sounds, turn off a Patch's effects during programming so you
can more clearly hear the changes you're making. Actually,
sometimes just changing effects settings can give you the sound
you want. (p. 70)