User manual

GeTTING STARTED : Control Voltage Range

Now that we’ve discussed the use of Control Voltage to manipulate parameters over time, it is important to introduce the

concept of attenuation as a method of controlling the range of movement.

Using a unipolar Control Voltage like from SLOPE, it is possible to control the range and direction of modulation, in relation to

the 0-Coast’s Panel Control setting, simply by adjusting the position of the associated INput Attenuvertors. For example, using

the SLOPE normalization to the MULTIPLY CV INput, this has the eect of manually rotating the Multiply Panel Control knob over

time, starting with the initial Panel Control setting shown below.

Figure 36: Adding the SLOPE’s unipolar voltage to the MULTIPLY Panel

Control Oset. The resulting “range” of movement is indicated by

the crosshatched area of the MULTIPLY Panel Control.

Figure 34: Adding the SLOPE’s unipolar voltage to the MULTIPLY

Panel Control knob. The resulting “range” of movement is

indicated by the crosshatched area of the MULTIPLY Panel Control.

Figure 35: With the MULTIPLY INput Attenuverter set to 12 o’clock, no voltage is

added to the MULTIPLY Panel Control setting and therefore there is no audible

eect.

Figure 37: Subtracting the SLOPE’s unipolar voltage from the MULTIPLY

Panel Control Oset, using the MULTIPLY INput Attenuvertor to invert

the signal’s polarity. The resulting “range” of movement is indicated by

the crosshatched area of the MULTIPLY Panel Control.

You should now hear the Triangle wave changing frequency in time

with the SLOPE Cycle (Figure 33 ). If you don’t hear any change,

check the position of the Voltage Math input Attenuator, which

controls the amplitude of the CV source as it is applied to the

destination, this case the 1V/OCT INput. As you turn it up, the

Modulation Depth will increase, causing greater sweeps in

frequency. The position of the grey FREQuency pot for VCO A will

have a big eect on the sound, as it sets the base frequency from

which modulation starts (Figure 36).

+5V

-5V

Time

Figure 32:

Triangle Wave: Base Frequency

(No Control Voltage Applied)

+5V

-5v

Time

Figure 33:

Triangle Wave:

Exponential Frequency Modulation