Alter Mode - Orthogonal Devices ER-102 User Manual

Alter mode

This mode is similar to the REAL-TIME mode in that steps under the play cursor are
affected and recording happens in real-time. However, no new steps are inserted in
the armed tracks. Instead, step parameters are overwritten with new values that are
derived from the input voltages. The step parameters are rewritten just before the
play cursor encounters the step and then plays it. If you are looping a single step
then the currently playing step and the next step about to be played are the same
step. In this case, voltage changes are reflected immediately.
Except for the D-1/D-2 inputs which are not used, the jack mapping and relationship
between voltages and step parameters is the same as in the STEP recording mode:
Step Parameter Input
CV-A A-1
CV-B A-2
DURATION AD-2
GATE AD-1
The typical useage scenario for the ALTER record mode is to lay down new automa-
tion or melody on an existing sequence of steps. However, there are many unusual
and interesting possibilities that can lead to complex results when using non-synced
LFOs or even feedback from the ER-101 itself.
Configurable Option: The unused D-1 and D-2 inputs can be configured to control
other aspects while in this mode. See the configuration file on your SD card for
more details.
Example: Knobby Interface
A particularly useful setup is to synchronize a traditional analog step sequencer with
the ER-101 but have all of the analog step sequencer's outputs go through the ER-
102 in ALTER record mode. If the ER-101 is looping a section that is the same length
as the sequence of steps on the analog step sequencer then you get a real-time
knobby interface for the loop playing on the ER-101 with pitch quantization! In
fact, now you have all the capabilities of the ER-101/102 added to your analog step
sequencer.
Relationship
Quantize voltage with table A
Quantize voltage with table B
(voltage)*20 (max 99 at 5V and over)
(voltage)*20 (max 99 at 5V and over)
gate,duration = floor(voltage*20)
maximum:99
minimum:0
−10 −5 0
VOLTAGE
5 10
20