Zeppelin Design Labs Altura Theremin, User Manual

Page: 16 / 25

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7. MIDI FUNCTION SELECT
The FUNCTION knob determines what type of MIDI data the left sensor will produce. The available
functions are:
1. Pitch Bend
2. Modulation
3. Note-On velocity
4. Channel volume
5. Portamento Time
6. X-Y Mode
7. Channel Select
A label on the bottom of your Altura reminds you of these functions. The order of the functions can be
rearranged by hacking the open-source code. See “Programming the Altura”.
Following is detailed information about each MIDI function. Please also see the sections “Left Distance
Sensor – MIDI Control Functions” on page 14 and “Data Far and Near Adjust” on page 15 for
general notes applicable to all functions.
FUNCTION 1: PITCH BEND
Function 1 emulates the Pitch Bend wheel on a conventional MIDI controller. The Altura sends
MIDI values of -8184 to +8184 based on left sensor readings, tagged as Pitch Bend data
(Controller #1) on the currently-selected Send channel. When you wave your hand in front of the
left sensor in Pitch Bend mode, the display shows a cute spinny-thing to represent Pitch Bend
Down and Pitch Bend Up.
At the neutral zone, or No Bend position, the display shows “
f
”. As you move your hand in, or
Near to the sensor, the pitch bends up and the display spins clockwise. As you move your hand
away, or Far from the sensor, the pitch bends down and the display spins counter clockwise. At
Maximum Bend, either up or down, the display forms a complete “
0
”. When you lock in to the
fully-bent pitch, a decimal appears: “
0.
”
Turn the DATA FAR knob to display numbers
0 - 12
. If you are using a Macchiato Mini Synth by
Zeppelin Design Labs, this will set the number of semitones the pitch will change at maximum
bend up and down. On other devices, this knob will have no effect or an unpredictable effect.
The Altura is passing data to the Macchiato using unassigned Controller #20. If your synthesizer
happens to use this controller for something, as does the Korg Monologue for instance, then
"NEUTRAL” OR
NO BEND
FULL BEND
UP
FULL BEND
DOWN