Chapter 5. Creating Patches

LPF2: Low Pass Filter 2. Although frequency components above the Cutoff frequency (Cutoff parameter) are cut, the sensitivity of this filter is half that of the LPF. This makes it a comparatively warmer low pass filter. This filter is good for use with simulated instrument sounds such as the acoustic piano.

LPF3: Low Pass Filter 3. Although frequency components above the Cutoff frequency (Cutoff parameter) are cut, the sensitivity of this filter changes according to the Cutoff frequency. While this filter is also good for use with simulated acoustic instrument sounds, the nuance it exhibits differs from that of the LPF2, even with the same TVF Envelope settings.

If you set LPF2 or LPF3, the setting for the Resonance parameter will be ignored.

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.

To edit the overall Patch while preserving the relative differences in the Cutoff Frequency values set for each Tone, set the Cut parameter (PATCH/COMMON/ PATCH MODIFY) (p. 71).

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.

To edit the overall Patch while preserving the relative differences in the Resonance values set for each Tone, set the Res parameter (PATCH/COMMON/PATCH MODIFY) (p. 71).

LPF

BPF

HPF

PKG

Level

High

Frequency

Cutoff frequency

parameter value

Low

Keyfollow (Cutoff Frequency Keyfollow)

Use this parameter if you want the cutoff frequency to change according to the key that is pressed. Relative to the cutoff frequency at the C4 key (center C), positive (+) settings will cause the cutoff frequency to rise for notes higher than C4, and negative (-) settings will cause the cutoff frequency to fall for notes higher than C4. Higher settings produce more change.

Cutoff frequency

 

 

 

 

 

 

(Octave)

 

 

 

 

 

 

 

 

 

 

 

 

+200

+100

 

 

 

 

 

 

+2

 

 

 

 

 

 

 

 

 

 

 

 

 

+50

 

+1

 

 

 

 

 

 

 

o

 

 

 

 

 

0

 

-1

 

 

 

 

 

 

 

 

 

 

 

 

 

-50

 

-2

 

 

 

 

 

 

 

 

 

 

 

 

-200

-100

C1

C2

C3

C4

C5

C6

C7

Key

88

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Image 88
Roland XV-88 owner manual Cutoff Cutoff Frequency, Resonance, Keyfollow Cutoff Frequency Keyfollow