Roland XV-5080. Owner's Manual page 153

keyboard to select the pertial.
PATCH TVF Parameter page ([PATCH] -
[F3 (TVF)] - [F1 (TVF Prm)])
fig.04-066.e_70
TVF
Filter Type
(TVF Filter Type)
Selects the filter type. A filter typically reduces, or attenuates,
a specific frequency range within a Tone in order to
accentuate its other frequencies.
Available Settings:
OFF: No filter is used.
LPF: Low Pass Filter. This reduces the volume of all
frequencies above the cutoff frequency. Since the high
frequency range is cut, the sound will become more mellow.
This is the most frequently-used type of filter.
BPF: Band Pass Filter. This type of filter leaves only the
region in the vicinity of the cutoff frequency, and cuts the
rest. It is useful for making distinctive sounds.
HPF: High Pass Filter. This type of filter cuts the portion that
lies below the cutoff frequency. It is useful for making
percussive or other sounds. that have a distinctive high
range.
Cutoff Freq (TVF Cutoff Frequency)
Range: 0–127
Specifies the frequency (cutoff frequency) at which the filter
will begin to affect the frequency characteristics of the
waveform.
Resonance (TVF Resonance)
Range: 0–127
Increases the level of the cutoff frequency, adding character
to the sound. Excessively high settings can produce
oscillation, causing the sound to distort.
Chapter 4 Creating Patches
fig.04-067.e_70
LPF BPF
Level
High
Frequency
Cutoff frequency
Low
Cutoff
Keyfollow Point
Range: A0–C8
Determines the key used for the center of the key follow
effect. The two independent parameters controlled by key
follow (cutoff frequency and envelope time) are both affected
by the Key Follow Point set here.
Keyfollow (Cutoff Frequency Keyfollow)
Range: -63– +63
Changes the cutoff frequency relative to the key follow point.
Positive (+) settings cause the cutoff frequency to rise for
notes higher than the key follow point, and negative (-)
settings cause the cutoff frequency to fall for notes higher
than the key follow point. Higher values will cause greater
change.
TVF Velo (TVF Velocity)
Curve (Velocity Curve)
Range: 1–4
Selects the curve which corresponds to the velocity value and
the cutoff frequency. The selected curve is displayed
graphically to the right of its value. When this is set to "1,"
velocity has no effect on the cutoff frequency.
Sens (Velocity Curve Sens)
Range: -63– +63
Determines the depth and polarity (positive/negative) of the
velocity curve.
A curve effect can be gained by setting the velocity curve to
higher values close to 63. Setting this close to 0 results in little
change in the cutoff frequency. With negative values, the
effect becomes reversed.
HPF PKG
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