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106
Chapter 8. Detailed Editing for Patches
A filter cuts or boosts a specific frequency region to change a sound’s brightness, thickness, or other qualities.
TVF PARAMETER
Parameters indicated by (
) can be edited via ZOOM EDIT (p. 94).
Parameter marked with a “
★
” can be controlled using specified MIDI messages.
Modifying the Brightness of a Sound with a Filter (TVF/TVF Envelope)
Parameter
Value
Explanation
Filter Type
Filter Type
OFF, LPF, BPF, HPF,
PKG, LPF2, LPF3
Type of filter
OFF:
No filter is used.
LPF:
Low Pass Filter. This reduces the volume of all frequencies above the Cutoff Frequency
in order to round off, or un-brighten the sound.
BPF:
Band Pass Filter. This leaves only the frequencies in the region of the Cutoff Frequency,
and cuts the rest. This can be useful when creating distinctive sounds.
HPF:
High Pass Filter. This cuts the frequencies in the region below the Cutoff Frequency.
This is suitable for creating percussive sounds emphasizing their higher tones.
PKG:
Peaking Filter. This emphasizes the frequencies in the region of the Cutoff Frequency.
You can use this to create wah-wah effects by employing an LFO to change the Cutoff
Frequency cyclically.
LPF2:
Low Pass Filter 2. Although frequency components above the Cutoff Frequency are
cut, the sensitivity of this filter is half that of the LPF. 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 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 Frequency
★
Cutoff
0–127
Frequency at which the filter begins to have an effect on the waveform’s frequency components
Resonance
★
Resonance
0–127
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.
Cutoff Keyfollow
Cutoff KFolw
-200–+200
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. Larger settings will produce greater
change.
ZOOM
ZOOM
ZOOM
ZOOM
ZOOM
LPF
BPF
Resonance
HPF
PKG
Parameter Value
Level
Cutoff frequency
Frequency
High
Low
C4
C3
C2
C1
C5
C6
C7
0
+50
+100
+200
-50
-100
-200
o
-1
-2
+1
+2
Cutoff frequency
(Octave)
Cutoff Keyfollow
Key
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