I. Overview/Controls/Inputs/Outputs
A. Overview – The goal of the Chordizer was to use a single voltage input and output a quantized
hord of voltages when used with 1v/o tave VCOs. A voltage is inputted through the IN ja k and
an be modulated by the AUX ja k and it's asso iated attenuator. The voltage range for the input is
0 to 5V.
Offsets to the input voltage are then applied, these offsets are ontrolled by three pots and
an be negative or positive offsets. When the offset voltage is outside of the voltage range of the
module, it will be transposed down or up an o tave automati ally to put it ba k into the voltage
range.
The input voltage and the offset voltages are then quantized. The QUANT knob sele ts what
musi al s ale is used to quantize. Before the voltage is finally output, a slew or portamento is
applied, ontrolled by the SLEW knob.
The module is ompatible with 12V or 15V systems without making any modifi ations. It
also has apabilities to have voltage ontrollable hord sele tion.
B.Controls -
1.OFFSET knobs – These knobs ontrol the offset of the voltages. They are numbered OFF1,
OFF2 and OFF3. When the knob is pointed straight up, no offset is applied. When turned lo kwise
the offset be omes more positive and when turned ounter lo kwise, the offset be omes more
negative. OFF1 ontrols the voltage outputted at the OUT2 ja k, OFF2 the OUT3 ja k and OFF3
the OUT4 ja k.
2.AUX knob – This attenuates the voltage inputted at the CV ja k whi h is then mixed with the
voltage from the IN ja k.
3.CHORD knob – This knob sele ts the memory bank to use in SAVE or LOAD operations. There
are 8 memory banks total. The knob attenuates the input of the CHORD ja k, whi h is normalized
to +5V when nothing is plugged into it. When using a 0 to 5V range sequen er to sele t hords,
leave this knob fully lo kwise.
4.QUANT knob – This sele ts what s ale is used in quantization. The table below outlines the
s ales. They are presented in order of least lo kwise to most lo kwise when rotating the knob.
SCALE root b2nd 2nd b3rd 3rd 4th b5th 5th b6th 6th b7th 7th
Chromati ON ON ON ON ON ON ON ON ON ON ON ON
Major ON off ON off ON ON off ON off ON off ON
Minor ON off ON ON off ON off ON ON off ON off
Harmoni Minor ON off ON ON off ON off ON ON off off ON
Major Pentatoni ON off ON off ON off off ON off ON off off
Minor Pentatoni ON off off ON off ON off ON off off ON off
O tave and 5ths ON off off off off off off ON off off off off
O tave ON off off off off off off off off off off off
5.SLEW knob – This knob ontrols how mu h the notes slew from one to another.
6.TUNE toggle – When a tivated this sets all outputs to 1V so os illators an be tuned together.
7.5ths toggle – When a tive OUT2 will always be a 5th above the input voltage.
8.Quantize-Then-Offset toggle – When a tive, the input voltage will be quantized before offsets
are applied. This makes so that smaller hanges in input voltage do not hange the output.
9.SELECT toggle – This toggle ontrols how the SELECT button and input work. When in the
enter position it will sele t a hord at random. When in the up position it will rotate through the
saved hords in as ending order and in the down position will rotate in des ending order.
