Roland XV-88 owner manual 102, Cutoff Cutoff Frequency

Chapter 6. Creating Rhythm Sets

Cutoff (Cutoff Frequency)

Selects the frequency at which the filter begins to have an effect on the waveform’s frequency components.

With LPF/LPF2/LPF3 selected for the Type parameter, lower cutoff frequency settings reduce a Tone’s upper harmonics for a more rounded, warmer sound. Higher settings make it sound brighter.

When the Type parameter is BPF, the cutoff frequency setting determines the range of frequencies within the Tone that will be heard. This can be useful when creating distinctive sounds.

When the Type parameter is HPF, higher settings of the cutoff frequency decrease the level of the Tone’s low frequencies, preserving its brighter qualities.

With PKG selected, the harmonics to be emphasized will vary depending on Cutoff Frequency setting.

Resonance

Emphasizes the portion of the sound in the region of the cutoff frequency, adding character to the sound. Excessively high settings can produce oscillation, causing the sound to distort.

LPF	BPF	HPF	PKG
Level
High
Frequency
Cutoff frequency
parameter value
Low
TVF VELOCITY

V-Cutoff (Cutoff Frequency Velocity Sensitivity)

Use this parameter when changing the cutoff frequency to be applied as a result of changes in playing velocity. If you want strongly played notes to raise the cutoff frequency, set this parameter to positive (+) settings. If you want strongly played notes to lower the cutoff frequency, use negative (-) settings.

V-Curve (Cutoff Frequency Velocity Curve)

Selects one of the following seven curves that determine how keyboard playing dynamics (velocity) influence the cutoff frequency. Set this to FIXED when the Cutoff frequency is not to be changed according to the force with which the keys are pressed.

1 2 3 4 5 6 7

V-Resonance (Resonance Velocity Sensitivity)

This allows keyboard velocity to modify the amount of Resonance. If you want strongly played notes to have a greater Resonance effect, set this parameter to positive (+) settings. If you want strongly played notes to have less Resonance, use negative (-) settings.

TVF ENVELOPE

This is used for setting TVF envelope (how cutoff frequency changes over time).

Depth (TVF Envelope Depth)

Specifies the depth of the TVF envelope. Higher settings will cause the TVF envelope to produce greater change. Negative (-) settings will invert the shape of the envelope.

V-Sens (TVF Envelope Velocity Sensitivity)

Specifies how keyboard playing dynamics will affect the depth of the TVF envelope. Positive (+) settings will cause the TVF envelope to have a greater effect for strongly played notes, and negative (-) settings will cause the effect to be less.

V-Curve (TVF Envelope Velocity Curve)

Selects one of the following 7 curves that will determine how keyboard playing dynamics will affect the TVF envelope. Set this to FIXED when the amount of TVF Envelope applied is not to be changed according to the force with which the keys are pressed.

1 2 3 4 5 6 7

102