16
PROG 4: Ed–Filter1
Indicates settings for filter 1, which controls the tone of oscil-
lator 1. You can select either a 24 dB/oct low pass filter with
resonance, or a 12 dB/oct low pass filter and 12 dB/oct high
pass filter connected in series.
When “Mode (Oscillator Mode)” (1–1a) is Single, Drums
you can use filter 1. When it is Double, you can use filters 1
and 2. In the case of Single and Drums, the filter 2 pages
cannot be selected.
4–1: Basic
Here you can specify the basic filter type used by oscillator
1, and set the cutoff frequency and resonance.
4–1a: Filter1
Type (Filter1 Type)
[Low Pass Resonance, Low Pass & High Pass]
Indicates the type of filter 1.
Trim
[00…99]
Adjusts the level at which the audio signal output from
OSC1 is input to filter 1A.
If the trim value is set too high, the sound may be dis-
torted if the Resonance is set to a high value or when
you play a chord.
4–1b: A (Filter A)
This filter cuts the high-frequency range above the cutoff fre-
quency. This is the most common type of filter, which cuts
the overtone structure to make a bright (sharp) tone darker
(mellow).
When “Type (Filter1 Type)” is Low Pass Resonance, the cut
will have a steeper curve.
Frequency (A Frequency)
[00…99]
Specifies the cutoff frequency of filter 1A.
Resonance (A Resonance)
[00…99]
This emphasizes the overtone components that lie in the
region of the cutoff frequency specified by “Frequency (A
Frequency),” producing a more distinctive sound. Increas-
ing this value will produce a stronger effect.
Reso.AMS (Resonance AMS)
[Off, (PEG, FEG, AEG, LFO, KT, EXT)]
Indicates the source that will control the “Resonance (A Res-
onance)” level (
Intensity (AMS Intensity)
[–99…+99]
Specifies the depth and direction of the effect that “Reso.
AMS (Resonance AMS)” will have on the resonance level
specified by “Resonance (A Resonance).”
The resonance level is determined by adding the “Reso-
nance (A Resonance)” and “Intensity (AMS Intensity)” val-
ues together.
For example, if Velocity has been selected, changes in key-
board velocity will affect the resonance.
With positive (+) values, the resonance will increase as you
play more strongly, and as you play more softly the reso-
nance will approach the level specified by the “Resonance
(A Resonance)” setting.
With negative (–) values, the resonance will decrease as you
play more strongly, and as you play more softly the reso-
nance will approach the level specified by the “Resonance
(A Resonance)” setting.
4–1c: B (Filter B)
This will be displayed if “Type (Filter1 Type)” (4–1a) is Low
Pass & High Pass
.
This filter cuts the low-frequency range that lies below the
cutoff frequency.
By cutting the lower overtones, it lightens the tone.
Frequency (B Frequency)
[00…99]
Specifies the cutoff frequency of filter 1B.
■
4–1: UTILITY
☞
“Write Program” (0–1), “Copy Oscillator,” “Swap Oscilla-
tor” (1–1)
4–1a
4–1b
4–1c
Low Pass Resonance: 24 dB/octave
low pass filter with resonance
Low Pass & High Pass: 12 dB/octave
low pass filter and 12 dB/octave high
pass filter in series
Frequency
Level
Low Pass
12dB/oct
24dB/oct
The effect of resonance
Low Pass
Level
Low resonance value
High resonance value
Level
Frequency
High Pass
12dB/oct
