Doepfer A-191 Shepard Generator/16xMIDI-CV Interface (no longer available) - Manual (Page 4)

A-191 MCV 16 System A - 100 doepfer
4
Table 1: Valid MIDI controllers, their corresponding CV
outputs, and default values.
The A-191’s internal MIDI-synchronised LFO has three
waveforms - sawtooth, triangle, and rectangle.
This LFO is only active when a MIDI clock is being
sent to the MIDI IN, from a START or CONTINUE
message until a STOP message. LED 8 indicates
that it’s active.
At a STOP message, the voltage at the CV output is
held; at a CONTINUE message, the LFO starts from
this value; and at a START message, the waveform
begins again, starting from 0 V.
The LFO rate can be slowed down by dividing the
clock rate. You set the divisor either with MIDI
controller #92 (Tremolo Depth) or manually, with
buttons 2 and/or 3.
The note length N of a full cycle of the waveform
generated by the LFO follows this formula :
Nth Note = 1/16 x controller value (see Table 2)
So, for instance, in 4/4 time, with a controller value of
8, the note length of a full LFO cycle would be half of a
whole note: that is, the LFO would cycle twice for each
beat in the bar (see Fig. 1).
Output corresponding MIDI controller default [V]
AT After Touch 0
Pit Pitch Wheel 2.5
C1 CTRL. #01 - Modulation Wheel 0
C2 CTRL. #02 - Breath Controller 0
C4 CTRL. #04 - Foot Controller 0
C5 CTRL. #05 - Portamento 0
C6 CTRL. #06 - Data Slider 0
C7 CTRL. #07 - Volume 5
C8 CTRL. #08 - Balance 2.5
C10 CTRL. #10 - Pan 2.5
C11 CTRL. #11 - Expression 0
C12 CTRL. #12 0
C16 CTRL. #16 0