Preparation is a physical modelling instrument based on nonlinear models of strings and collisions. Product licence:


Physical modelling of prepared strings

Preparation is based on mathematical modelling of 2 basic elements; strings which can be configured as bars, and a rattling element. Each voice has a pair of strings connected by a rattle that reacts to the vibrations at each end. This uses the latest research in collision modelling to calculate the acoustic system in real-time. The strings have parameters for nonlinearity, inharmonicity, sustain and tone. The rattle has controls for the mass at each end, the gap from the strings, the stiffness, edginess, strength and its position.  A low shelf EQ, overdrive and reverb units complete the signal chain, giving a wide range of sounds from cutting leads to epic soundscapes. See this tutorial post for further details.

Demo tracks by Gadi Sassoon

This is a collection of tracks created by Gadi Sassoon. Each one uses an individual preset crafted by Gadi to highlight the range of tonal variation and modulation control available. These sounds come straight from the plugin.

Next-generation collision modelling

Preparation is based on next-generation modelling of collisions between the strings and the rattle element. Accurate modelling of collisions using a direct numerical method is computationally expensive to perform. Using our advanced non-iterative solvers we can compute the acoustic system for 8 voice polyphony in real-time, with the minimum amount of CPU usage. Preparation uses finite difference modelling of the physical equations of motion, details of which can be found in these technical papers.

Sound design by Deru and Gadi Sassoon


Deru is Benjamin Wynn, an award winning electronic musician and composer based out of Los Angeles. He has been releasing albums and scores under the Deru alias for the last 15 years. In addition to his own music, Wynn composes for television, film, and dance, and creates multimedia performance experiences as part of the Echo Society.


Gadi Sassoon

Gadi Sassoon is a composer, poly-instrumentalist and synthesist based in Milan. He combines experimental systems and traditional techniques to create sounds that escape definition. The narrative overtones of his music stem from years working as a composer with labels, publishers, film companies and the art world, appearing on major and indie records, soundtracks and orchestral productions.

System Requirements


– macOS High Sierra 10.13 to Sonoma 14.

– Intel or Apple Silicon processor.


– Windows 10 /11.

– Intel or AMD processor.

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