Korg M3, Parameter Manual

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Program mode
44
Note: For several types of LFO waveform or if the LFO cycle
is fast, the LFO output may not always keep up with high
values such as +99 or –99.
In this case, setting the Threshold to these values may cause
inconsistent behavior, or may mean that the EG doesn’t reset
at all. If this happens, reduce the Threshold until the EG
triggers consistently.
2–8b: Envelope
Pitch EG
The envelope moves to a specified level over the specified
time, and then moves to the next specified level over the
specified time. It produces a modulation signal
corresponding to this movement.
The parameters below let you set four levels, the amount of
time it takes to go from each of the levels to the next, and the
shape (from linear to curved) of each transition.
Level
Each of the four levels can be either positive or negative.
Positive
levels will make the pitch (or other AMS
destination) go up from its programmed value; negative
levels will make it go down.
Note that, unlike the Filter and Amp EGs, the Pitch EG’s
Sustain Level is always 0.
Start [–99...+99]
This sets the initial EG level, at note-on.
Attack [–99...+99]
This sets the level at the end of the Attack time.
Break [–99...+99]
Break, short for Break Point, sets the level at the end of the
Decay time.
Rel (Release) [–99...+99]
This sets the level at the end of the Release time.
Time
Higher values mean longer times, as shown below:
Attack [00...99]
This sets how long the EG takes to move from the Start level
to the Attack level.
For the fastest possible attack time, you can set the Start
level to +99; in this case, the EG will start instantaneously at
its maximum value.
Decay [00...99]
This sets the time it takes to move from the Attack level to
the Break level.
Slope [00...99]
This sets how long the EG takes to move from the Break
level to the Sustain level (which for the Pitch EG is always
0). Once it reaches the Sustain, the EG will stay there until
note-off, unless it is reset via AMS.
Rel (Release) [00...99]
This sets how long it takes the EG to move from the Sustain
level to the Release level.
Curve
For the sake of simplicity, most of the diagrams in this
manual show envelopes as being made out of straight lines.
In actuality, though, envelopes are more likely to be made
out of curves.
In other words, each segment’s level will change quickly at
first, and then slow down as it approaches the next point.
This tends to sound better than straight, linear segments.
Classic analog synth envelopes made these curved shapes
naturally. The M3 goes a step further than vintage synths,
however, and lets you control the amount of curvature
separately for each of the four envelope segments.
Pitch EG Curve
When you change the curvature, the EG times remain the
same. However, greater curvature will tend to sound faster,
because the value changes more quickly at the beginning.
Different curve settings for up and down
You may find that different amounts of curvature are
suitable for segments which go up and segments which go
down.
For instance, a curve of 3 is a good default setting for
upward segments, such as Attack. On the other hand, a
curve of 6 or more is good for downward segments, such as
Decay and Release.
Attack [0L (Linear), 1...9, 10E (Exp/Log)]
This sets the curvature of the Attack segment - the transition
from the Start level to the Attack level.
Decay [0L (Linear), 1...9, 10E (Exp/Log)]
This sets the curvature of the Decay segment - the transition
from the Attack level to the Break level.
EG Value Actual Time
10 10 ms
20 44 ms
30 104 ms
40 224 ms
50 464 ms
60 944 ms
70 1.8 seconds
80 3.8 seconds
90 10.9 seconds
99 87.3 seconds
Note-on or reset Note-off
Attack
Time
Star t
Level
Decay
Time
Release
Time
Release
Level
Attack
Level
Change to
Pitch
Sustain Level
(Always 0)
Time
Break
Level
Slope
Time
Curve = 0 (Linear)
Curve = 0 (Linear)
Curve = 10 (Exp/Log)
Curve = 10 (Exp/Log)