Roland Learn About Tonewave FX Pedal Features of the XP-30 Electronic Keyboard

Pan

Adjust the stereo position of the Patch. A setting of L64 is far left, 0 is center, and 63R is far right.

Analog Feel (Analog Feel Depth)

Adjust the depth at which 1/f modulation is applied to the Patch.

1/f Modulation

“1/f” is a mathematical ratio that expresses the amount of “predictable randomness” occurring in natural sounds that the human ear finds pleasing, such as soft breezes or gentle brooks. The XP-30 is able to modulate the pitch and volume of sounds by this ratio to create the warmth characteristic of early analog synthesizers.

Octave (Octave Shift)

Specify the transposition of the Patch when played on the keyboard, in units of one octave (-3–+3 octaves).

Stretch (Stretch Tuning Depth)

Select the stretch tuning curve. The selected curve will affect the way in which notes of a chord sound with each other. The diagram below shows the tuning curves which can be selected. In the “tuning curve,” the horizontal axis represents the scale, and the vertical axis represents pitch difference relative to equal temperament. When OFF is selected for this parameter, the notes of the keyboard will be in mathematically equal temperament. With a setting of 3, the high and low note ranges will be stretched the most.

Pitch difference from
equal temperament	Parameter value
	3
	2
	1
OFF	OFF

1

2

3

Low note range High note range

Stretched Tuning

Acoustic pianos are normally tuned so that the high note range is a bit sharper and the low note range is a bit flatter than a mathematically calculated equal temperament (i.e., where each octave would be precisely double the frequency of the previous octave). This is done simply because pianos sound better when tuned this way.

Chapter 3. Creating Your Own Sounds

Priority (Voice Priority)

Specify which currently-sounding notes will take priority

when notes are turned off to make room for newly-requested notes that would exceed the limit of 64 simultaneous voices.

LAST: Notes played later will take priority. When the 65th voice is requested, the first-played of the currently sounding notes will be turned off.

LOUDEST: Louder notes will take priority. When the 65th voice is requested, the softest of the currently sounding notes will be turned off.

VelRang (Velocity Range Switch)

Specify whether the Velocity Range setting (see following display) will be used or not. The Velocity Range setting will be used when the VelRange parameter is ON.

VELOCITY (Velocity Range)

These parameters specify the range of velocities that will
play the Tone. This can be used to make notes of different
strengths play different Tones.
	3
* To make Velocity Range settings, the Velocity Range Switch in
	Chapter
Specify the lower velocity limit. Although it also depends on
the previous display must be turned ON.
Lower (Velocity Range Lower)
the Cross Fade settings, notes played softer than this limit will
not sound the Tone, or will produce extremely quiet sounds.
Upper (Velocity Range Upper)
Specify the upper velocity limit. Although it also depends on
the Cross Fade settings, notes played more strongly than this
limit will not sound the Tone, or will produce extremely
quiet sounds.

*It is not possible to set Lower to a value greater than Upper, nor Upper to a value less than Lower. If you attempt to do so, the two values will change together.

Cross Fade (Velocity Cross Fade)

Specify the way in which the volume of the Tone will change when the velocity of a note falls outside of the specified Velocity Range. Higher settings will result in a more gradual change in volume. If you do not want the Tone to sound at all for velocities outside the specified range, set this parameter to 0.

Level

Velocity

1	Lower	Upper
	parameter value	parameter value

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