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13. Module reference: Random group NORD MODULAR G2 V1.4x
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S
TEP
This setting controls the possible difference between a new value and its previous value. When set
to 100% the difference might be from the lowest extreme value to the highest extreme value,
although such a big step will occur only rarely. When lowering the step percentage value the average
difference to the previous step becomes smaller. A very low step percentage value will create a signal that
evolves só slowly that the changing is hardly noticed. Still, over a long time the signal can change over
quite a big range.
E
DGE
Edge causes glides between the steps. When a random signal generator is used at low speed the
Edge setting will create a portamento effect between the steps. At audio rates the Edge function
can filter away possible zipper caused by stepping from one value to the next value.
C
LOCKED
RANDOM
GENERATOR
INPUTS
AND
PARAMETERS
C
LOCK
INPUT
The clock input accepts a waveform that can be a blue signal, a yellow signal or a red signal. Every
time the signal on the clock input changes it value from a zero or negative value to a positive
value, the output of the clocked random generator changes value.
If the clocked random generator produces a yellow pulse or a state wave shape, the clock works slightly
differently. For these two cases the module will either pass on the input clock pulse or instead block the
input clock pulse. On the next input clock pulse a new decision is made to either block or pass the input
pulse signal.
P
ROB
(=
PROBABILITY
)
This setting applies to the random trigger wave shapes on the RndTrig and RndPattern
modules. A random trigger signal is a pulse signal that is either a logic
HIGH
or a logic
LOW
, where the state of the output refers to either the
HIGH
state or the
LOW
state. When
the RndTrig module is clocked by a 1 Hz clock signal, every once a second there is the chance for the
state to change from the
LOW
state to the
HIGH
state and stay
HIGH
during the time the input clock signal
is
HIGH
or the value on the Clk input is greater than zero. When Prob is set close to 100% it means that
there is a very high probability that an output pulse will be passed on every second, creating almost the
original signal but with an occasional hiccup now and then. When Prob is close to 1% the probability
that an output trigger will be passed on is low, meaning that over a longer time much less output pulses
will occur. In effect it will ‘thin out’ the train of clock pulses from the input.
On the RndPattern module, which can produce state signals (a state signal is basically an analog pulse
wave shape alternating between -64 and +64 units), the probability of occurrence can be set by the
combined Step/Prob control.
So, when a random module is in random trigger mode it first waits for a trigger pulse to arrive. The
moment the pulse arrives it decided whether to let this trigger pulse through to the output or block it
until the next trigger pulse arrives. So, it is a little bit like a switch is opened or closed at random on the
moment the trigger pulse arrives and this switch passes or blocks this incoming trigger pulse. This means
that the signal at the output of the module will have the same pulsewidth or pulse length as the trigger
pulse on the Clk input of the module, although the output will always be a logic level on the RndTrig
module and a signal alternating between -64 and +64 units on the RndPattern module.
C
HARACTER
The random signal generators appear random to our ears, but in the very long run the sequence
of values produced by the generators will actually repeat itself. Still, this type of digital random
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Productinformatie
| Merk | Nord |
| Model | Modular G2 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 60689 MB |
