1. First steps in Reaktor Core - Native Instruments

As the name implies (and the info text states), this module converts between
P (pitch) and F (frequency) scales – exactly what we need. So let’s create a
second input labeled “P” and connect it using the P2F module:
That should do it, but wait! In our instrument we have a “P Cutoff” knob defining
the base cutoff of the filter, and to that is added the modulation signal
from the envelope, which we have to convert to an event signal on the primary
level in order to feed it into the P input of the filter. Now that the conversion
is no longer necessary, we can remove the A/E module and plug the audio
signal directly into the audio P input of our new filter. Although this approach
is fine, let’s look at another way, just for fun.
We’ll start with our P input in event mode and add another modulation input
in audio mode. (If you remember our discussion about slow envelopes, you will
understand why we decided to call this input “PM”, not “FM”.) We also need
to have the modulation input use the semitones (pitch) scale. That’s exactly
how it was done in our original instrument: we added our envelope signal to
the “P Cutoff” signal and plugged the sum into the P input.
So first change the P input to the event mode (as described previously) and
add another PM input, which should be in audio mode:
As a user of the Reaktor primary level, you probably expect us to add the
two signals together now. In fact, we could do that, but in Reaktor Core the
Add is considered a low-level module, and using it generally requires some
knowledge of fundamental Reaktor Core low-level working principles. They
are not that complex and will be described later in this text. For now, you
don’t need to know them; just use a control signal mixer instead, for example,
Standard Macro > Control > Ctl Mix:
REAKTOR CORE – 31