Korg M3, Руководство по параметрам

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KARMA GE guide
546
Index Group
Overview
The Index Group controls the order of the pitches as they
are generated from the Note Series, and some other
characteristics that can affect the number of notes generated
at a time.
About Index Patterns
Index Patterns describe a way of moving through the Note
Series in memory and consequently control the order of the
pitches as they are generated. The Note Series has an index
associated with it that indicates the current position, and the
next Index to be generated. The Index Pattern values
indicate how the index will be moved after generating the
Index at the current position. A positive value moves
forward from the current position; a negative value moves
backwards; a value of 0 repeats a Index. Choices can be
made from “Random Pools” of values as described in detail
later on. When the Phase “Direction” is set to 1: Backwards,
the values operate in inverted fashion.
Since the first value in the Index Pattern is not used until
after the first Index has been generated, a Index Pattern of {1,
1, 1, –2}
will cause the generation of the first four notes in the
Notes Series, after which it jumps back to the 2nd note in the
Note Series and so on.
Note that it is possible to create Index Patterns that will not
move ahead or will actually move backwards, given that
you can start from a position that is somewhere in the
middle of a Note Series by using either the “Start %”
(
☞
p.534) or “Beginning/End Offset %” parameters
(
☞
p.537) in the Phase Group. If you do create a Index
Pattern that simply stays in one place (i.e. {1, –1}, or {0}), a
Phase Change will only occur if the Phase “Length Mode”
(
☞
p.534) is not set to 0: AC-Actual, since in this mode it
waits for the end of the Note Series to be reached, and this
will never happen if there is no forward movement.
A Index Pattern will loop as long as note generation
continues. It normally will not reset to the beginning of the
Pattern unless a new Trigger is received, or the Phase
Pattern has been configured to restart it at the beginning of
certain Phases. This means that a four step Index Pattern can
be looping while an eight step Velocity Pattern and a twelve
step Cluster Pattern are also independently looping, for
example.
Besides using Index Patterns, several other means of
moving through the Note Series are provided. These options
are controlled with the Index Pattern Type parameter, as
described below.
Pattern Grid & Associated
Parameters
Index Pattern
A Index Pattern has any number of steps up to 32, with each
step being represented by one column on the grid. The first
column always contains at least one value; unused columns
appear disabled. The 15 rows represent forward and
backward movement from the current index as each note or
cluster of notes is generated.
Pattern girds cannot be viewed or edited on the M3.
Associated Parameters
Index Mode [0…2]
0: Pattern
Movement through the Note Series will be controlled by a
Index Pattern constructed in the pattern grid.
1: Random
Causes the pitches to be chosen at random from the
applicable portion of the Note Series. Unlike most
arpeggiators, the random algorithm used here does not
allow notes to happen twice in a row, which sounds less
machine-like and more musical. Once a note has been
chosen, future choices of that note will not occur until all
other notes in the applicable portion have been chosen.
2: Random Walk (“Random Walk Max Step”: 1…9)
Makes available the “Random Walk Max Step” parameter.
Causes the pitches to meander from the start pitch in a
random fashion, with the largest step that can be taken in
any direction controlled by the “Random Walk Max Step”
parameter. For example, if “Random Walk Max Step” is set
to 2, then the “pool” of possible choices for movement from
the current Index is {–2, –1, 1, 2}. Note that {0} is not allowed
as a possible choice. This is good for creating riffs which
sound a bit like improvisation, especially when you use the
Phase Group to ensure that random phrases will be repeated
a number of times before new ones are chosen.
If you want the possibility of the same notes happening
twice or more in a row, you can use 0: Pattern, and
configure the Index Pattern to have pools of values
including “0,” instead of using Random or Random
Walk.
Note Series: C4 E4 G4 B4 ....
Index Pattern: 1 1
–2
1
Note : C4 E4 G4 B4 E4 ...
0: Pattern 1: Random 2: Random Walk