Kenton Control Freak all versions - Manual (Page 41)

CONTROL FREAK EXTERNAL INPUTS 1 & 2
37
CV-to-MIDI
The external inputs may also be used as CV/Gate inputs in order to perform CV-to-MIDI
conversion conversion. As the set up procedure is rather extensive, Program 60 (125 for Control Freak
ORIGINAL ) has been pre-loaded with a CV-to-MIDI demo patch.
An example of how to program this will be made available on our website.
When the inputs are configured for CV-to-MIDI conversion, the following network is
recommended in order to obtain satisfactory results:
To set up, first play bottom ‘C’ on your analogue monosynth and adjust it to play in tune. Next,
play top ‘C’ two octaves up and adjust the trimmer (scaling) until this ‘C’ is also in tune. The synth
will then accurately convert 1V/Oct CV into MIDI.
Notes
CV-to-MIDI conversion will not work using a Hz/V synth as the master.
Scaling – each individual slider may be scaled between 0 and 255, which is particularly useful when using the
external inputs. However, where a slider’s value is set above 127, the output MIDI message will not go higher
than 127 (the data is truncated).
Playing style – to avoid hanging notes, care must be taken with the articulation of notes when playing.
Although the Control Freak sends an ‘All notes off’ message when each key is released in order to avoid this
effect, it should be noted that some older synths (eg:Yamaha DX-7) do not respond to this standard MIDI
message [123] but to message [127] instead.
IMPORTANT:When using the inputs for voltage to MIDI conversion, the input range must be restricted to the
operational range of 0 to +5v DC.