1. First steps in Reaktor Core - Native Instruments

And here is an example of an event core cell:
This module is a parabolic shaper for control signals, which can be used to
implement velocity curves or LFO signal shaping, for example.
As previously mentioned, event core cells are restricted to event processing
tasks. Because clock sources are disabled inside them (see the table above),
they cannot generate their own events and, therefore, cannot implement modules
such as event-rate LFOs and envelopes. When you need such modules,
we suggest that you take an audio cell and convert its output to event rate
using one of the primary-level audio to event converters:
The above structure uses an audio core cell implementing an ADSR envelope
and converts it to event rate to modulate an oscillator.
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