M
t
ath
ransforMs
Under the ER-101/102 paradigm, whenever you want to operate mathematically on
the parameters of a single step or multiple steps, you use a MATH transform. Exam-
ples of such operations are transposing pitch values, randomizing gate lengths, dou-
bling or halving step durations, and quantizing random note durations or pitches to
a fixed grid.
There are two types of transforms, destructive and non-destructive. A destructive
transform permanently alters the stored parameters of the target steps. These
destructive transforms are always accessed via the MATH button. A non-destructive
transform alters step parameters as they are being interpreted during playback but
without changing their stored values. You will find non-destructive transforms in
the GROUP MODIFIER section of the ER-102's interface.
All transforms share the following interface:
UI Element
Function
LEFT knob
Selects an operation (i.e. add, multiply, randomize, etc.).
RIGHT knob
Changes the focused operator's parameter.
FOCUS buttons
Focuses the interface on a particular step parameter.
DELETE button
Clears all operations so that the transform has no effect.
Edit screen
Pressing and holding the MATH button will activate the TRANSFORM EDIT screen for
any of the desctructive transforms associated with tracks and groups.
TIP:
When you first enter the TRANSFORM EDIT screen, the word "PIN" will be flash-
ing in the VOLTAGE display. Press the VOLTAGE focus button to pin the TRANSFORM
EDIT screen so that you do not have to hold the MATH button while making long
edits to the transform. Pressing the MATH button while pinned in the edit screen
will apply the current MATH transform.
The TRANSFORM EDIT screen for the non-destructive group transforms is automati-
cally activated when editing the GROUP MODIFIERS (refer to the chapter on groups).
The TRANSFORM EDIT screen: Turning the LEFT knob will change the focused
operation for the focused parameter (in this case CV-A). Turning the RIGHT knob will
change the focused operation's paramter value.
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