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Envelope Group
Overview
Each Generated Effect has 3 envelopes which can be applied
to various options such as Velocity, Tempo, Pitch Bend,
Duration, Repeat Time, and any CC (Control Change).
About Envelopes
For those of you familiar with synthesizer envelopes, these
are standard ADSR Envelopes, with the addition of a Start
Level. For those who are not, ADSR stands for "Attack,
Decay, Sustain, Release". When the envelope is triggered in
some fashion like a key being depressed, the envelope starts
at the Start Level and moves to the Attack Level in the
amount of time specified by Attack Time. This is the "Attack
Phase" of the envelope. Once the envelope reaches the
Attack Level, it then immediately continues to the Sustain
Level in the amount of time specified by Decay Time. This
is the "Decay Phase". When it reaches the Sustain Level, it
will remain there until some event causes it to enter the
"Release Phase," typically a key being released. The
envelope then moves to the Release Level in the amount of
time specified by Release Time.
An envelope simply describes the shape of some function,
and the time that it takes. In the case of KARMA GE, the
function is either a crescendo/decrescendo of the velocity
levels of the notes in the phrase, an accelerando/ritard of the
speed at which the notes are generated, an overall sweeping
of the pitch, a continuous varying of a selected CC (MIDI
Control Change), etc.
Parameters
The parameters are the same for all three of the envelopes,
and are discussed below.
On/Off (Envelope On/Off)
0: Off
1: On
Turns on the corresponding envelope, and makes its
parameters operative.
Note: Even if the envelope is properly activated, you may
not be hearing any effect if the "Transmit MIDI Filter:
Envelope1/Envelope2/Envelope3" parameters (+PG p.115)
have been set to filter out the data that KARMA is
generating.
Note that in the case of Velocity Envelopes, the envelope's
shape is subtractive to the Initial Velocity Level generated
according to the "Velocity Mode" Parameter. (p.1069) The
loudest value the envelope will produce is the Initial
Velocity received. However, when low Initial Velocities are
received, the Envelope is automatically scaled so that a
consistent shape is maintained regardless of the value. In
other words, the Envelope will be compressed to the degree
that the Initial Velocity is less than 127. For more
information on Initial Velocity, see Velocity Group/"Velocity
Mode."
When and how the Envelopes will be triggered is determined
by the Envelope Trigger Parameters (Envelope1, Envelope2,
Envelope3: "Trigger") in the KARMA Module parameters.
For more information, see "7–4b: Module Parameters-
Trigger" on page 121.
In addition to being triggered by the keyboard, the envelopes
can also be selectively triggered at Phase Changes according
to settings in the Phase Group.
Envelope Type
0: [VE] Velocity
[0, 1]
1: [TA] Tempo-Absolute
2: [TR] Tempo-Relative
3: [PB] Pitch Bend
4: [DU] Duration
5: [RT] Repeat Time
6: [00] Bank Select
7...100: [#00...#95] CCs (Control Changes)
101...127: [N/A]
Selects the function that the envelope performs. The first six
settings are specific predetermined types, while the others
allow any MIDI CC Message to be sent by the envelope.
0: [VE] Velocity
Controls the crescendo and decrescendo of the Riff, much
like an Amplitude Envelope controls the volume on a
synthesizer. The envelope's range of 0–99 is scaled into 0–
127, which is then combined with the actual velocities of the
notes being generated, to impart an overall velocity shape
while maintaining the accents within the individual notes.
1: [TA] Tempo-Absolute
Controls the speed of the Riff, for accelerando and ritard
effects. When active, the effect does not sync to the Internal
Master Clock or External Sync, but runs on its own clock,
Envelope Group Overview
[0...127]
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