R Otoinversion - Orthogonal Devices ER-102 User Manual

r
otoInversIon
The ER-101 provides the COPY operation and the MATH transforms as its main tools
for generating new material from existing material. However, permutations of a
given sequence were not easily accessible except via manual step-by-step editing.
Hence, I included the inversion and rotation operations (i.e. rotoinversion) on the ER-
102. Using just basic inversion and rotation operations
sequence can be generated quickly and intuitively.
The behavior of the INVERT and ROTATE buttons depends on what is focused when
they are pressed:
Focus Target
PATTERN The focused parameter
TRACK The focused parameter
PART The focused parameter
step of the focused part
GROUP The membership of the focused
Focus INVERT INVERT+ROTATE
PATTERN Reverse Shift Backward
TRACK Reverse Shift Backward
PART Reverse Shift Backward
GROUP Invert Shift Backward
Notice that when PATTERN, TRACK, or PART are focused, it is the focused step param-
eter that is shifted or reversed, but, when the GROUP is focused then it is the group
membership that is shifted or inverted. INVERT+ROTATE means that you press the
ROTATE the button while holding the INVERT button.
The figure to the right depicts these shifting and reversing operations in the case
that a pattern is focused. Notice how it is only the focused parameter (DURATION in
this case) that is affected, thus allowing you to alter rhythm and voicing separately
from pitch and so on.
any permutation of a given
of the steps in the focused pattern are affected.
of all steps in the focused track are affected.
of all steps between the start step and end
are affected.
group is affected.
ROTATE
Shift Forward
Shift Forward
Shift Forward
Shift Forward
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