Korg M50-88 Parameter Manual page 36

M50 series music workstation
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Program mode
Attack
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
This sets the time it takes to move from the Attack level to
the Break level.
Slope
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)
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 M50 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
Curve = 0 (Linear)
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
This sets the curvature of the Attack segment - the transition
from the Start level to the Attack level.
Decay
This sets the curvature of the Decay segment - the transition
from the Attack level to the Break level.
28
Curve = 0 (Linear)
Curve = 10 (Exp/Log)
Curve = 10 (Exp/Log)
[0L (Linear), 1...9, 10E (Exp/Log)]
[0L (Linear), 1...9, 10E (Exp/Log)]
[00...99]
Slope
This sets the curvature of the Slope segment - the transition
from the Break level to the Sustain level (which for the Pitch
EG is always 0).
Rel (Release)
This sets the curvature of the Release segment - the
[00...99]
transition from the Sustain level to the Release level.
2–8c: EG Level/Time Modulation
[00...99]
L (Level)
These settings let you use two different AMS sources to
control the Level parameters of the EG. For each of the two
AMS sources, the Start, Attack, Decay, and Break levels each
have their own modulation intensities.
[00...99]
By using different settings for each of the three levels, you
can cause both subtle and dramatic changes to the EG shape,
as shown below.
Note: Once the EG has started a segment between two
points, that segment can no longer be modulated. This
includes both the time of the segment, and the level reached
at the end of the segment.
For instance, if the EG is in the middle of the Decay time,
you can no longer modulate either the Decay time or the
Break level.
This also means that modulating the Start level, Attack level,
or Attack time will not affect notes that are already
sounding, unless the EG is then re-started via EG Reset.
Pitch EG Level Modulation
Original Shape
Negative AMS on Start,
Attack, and Break
AMS1
AMS1
This selects the first AMS source to control the EG's Level
parameters.
For a list of AMS sources, please see "AMS (Alternate
Modulation Source) List" on page 374.
St (Start)
This controls the depth and direction of the AMS
modulation for the Start level.
For example, if you set the AMS1 source to Velocity and set
St to +99, the Start level will increase as you play harder. If
you instead set St to –99, the Start level will decrease as you
play harder.
At (Attack)
This controls the depth and direction of the AMS
modulation for the Attack level.
[0L (Linear), 1...9, 10E (Exp/Log)]
[0L (Linear), 1...9, 10E (Exp/Log)]
Positive AMS on Start,
Attack, and Break
Positive AMS on Start and Break,
Negative AMS on Attack
[List of AMS Sources]
[–99...+99]
[–99...+99]

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