Filter
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MOTIF Basic Structure
Main functions
Basic Structure
■ Pitch
Reference (page 138)
This unit controls the pitch of each Element output
from OSC. You can detune Elements, apply Pitch
Scaling and so on. Also, by setting the PEG (Pitch
Envelope Generator), you can control how the pitch
changes over time.
● PEG (Pitch Envelope Generator)
Using the PEG, you can control the transition in
pitch from the moment a note is pressed on the
keyboard to the point at which it is released. As
illustrated at right, the Pitch Envelope consists of
five Time (transition speed) parameters and five
Level (pitch) parameters. This is useful for creating
automatic changes in pitch. Furthermore, different
PEG parameters can be set for each Element.
■ Filter
Quick Start Guide (page 84) · Reference (page 140)
This unit modifies the tone of each Element output
from Pitch by cutting the output of a specific frequency
portion of the sound. You can also set the Filter
Envelope Generator (FEG), to control how the filter
works over time — letting you set up dynamic changes
in tone.
● Cutoff Frequency and Resonance
Filters work by allowing the portion of the signal
lower than a given frequency to pass, and cutting
the portion of the signal above that frequency. This
frequency is referred to as the cutoff frequency. You
can produce a relatively bright or darker sound by
setting the cutoff.
A parameter that boosts the level of the signal in the
area of the cutoff frequency is called Resonance. By
emphasizing the overtones in this area, this can
produce a distinctive “peaky” tone, making the
sound brighter and harder.
● About the main Filter types
The Low Pass Filter is shown in the illustration
above — however, the MOTIF features other Filter
types as well. This section introduces you to the
four types.
•Low Pass Filter (above)
This only passes signals below the Cutoff frequency.
You can then use the Reso (Resonance) parameter to
add further character to the sound.
• High Pass Filter
This only passes signals above the Cutoff frequency.
You can then use the Reso (Resonance) parameter to
add further character to the sound.
0
Release
Level
Attack
Level
Hold Level
Attack
Time
Hold
Time
Decay1
Time
Decay2
Time
Release
Time
Decay1
Level
Sustain
Level
Key off
Time
Level
Cutoff frequency
Frequency (pitch)
Level
These resonance are
"passed" by the filter.
Cutoff frequency
Resonance
Frequency (pitch)
Level
Resonance
Cutoff Frequency
These frequencies are
"passed" by the filter.