Kontakt 4 - Authentic Expression Technology

The new Authentic Expression Technology sees KONTAKT 4 radically redefining the authentic reproduction of acoustic instruments with all their dynamics and articulations, while adding completely new options for creative sound design. In addition to the traditional way of sampling different volume levels of an instrument statically, AET is able to capture specific spectral characteristics of samples and gradually apply them to another samples in real-time, allowing you to seamlessly “morph” between different instruments' characteristics. This breakthrough allows for a new level in expression and realism when playing a sampled instrument.
AET is especially powerful applied to solo instruments with sustained sounds - such as strings, brass, woodwinds, and choir: You can hold down a key and then seamlessly fade with the Mod Wheel between different articulations (e.g. trumpet playing with and without mute) or volume/dynamic levels with different harmonics.
It's often possible to merge the acoustic characteristics of different instrument such as the piano and celesta in real time, opening new horizons for creative sampling and new kinds of hybrid instruments.

-Native Instruments