1. First steps in Reaktor Core - Native Instruments

4.6. Event accumulator with reset and initialization
So, in order to achieve the desired reset functionality we need to override the
adder output by some initial value. To do this we can use a Merge module
(found in the Built-In Module > Flow submenu). The simplest way is to connect
the second input of the merge module to the Rst input.
Now the reset event will be immediately sent to the Merge module, overriding
the adder output, should the accumulated event arrive at the same time. From
there it goes to the output and into the internal state of the accumulator.
In the above structure, the value occurring at the Rst input will be used as the
new value of the accumulator. Maybe it’s even not such a bad idea, but then
it’s not exactly a reset function, but rather a set function, as implemented in
the standard Reaktor event accumulator module. If we want to have a true
reset function we should write only zero values into the state, regardless of
the value appearing at the Rst input. So what we have to do is to send a zero
value to the Write module each time an event occurs at the Rst input.
Sending an event with a particular value in response to an incoming event is
a quite common operation in Reaktor Core, and we suggest using the Latch
library macro for that. Expert Macro > Memory > Latch:
As we have already described, the Latch module has a value input (top) and
a clock input (bottom). We need to connect the Rst input to the clock input
of the latch to trigger the sending of an event to the output of the latch, and
we also need to connect a zero constant to the value input of the latch, because
we want the output events to always be zero. Or we can remember that
disconnected inputs are considered to be zero constants (unless otherwise
specified), and we can leave the value input of the latch disconnected:
78 – REAKTOR CORE