Eigen is a reflection processing multitool. Created through leveraging Lese's Impulse Engine, Eigen is able to perform three distinct functions, split into three different modes: Play, Render, and Analyze. These three modes are able to perform a selection of different "space-aware" processes; Play does accurate early reflection processing in real-time, Render computes high-quality reverb impulse responses for you to use in convolution reverbs (or in Eigen itself, if you want), and Analyse checks your virtual space to see how sound resonates against it.

Acoustic Simulation

At the heart of Eigen lies a simplified (for ease of use) version of an in-depth acoustic simulation system based on the Impulse Engine. One interesting technical note is that the acoustic engine is able to work in a simple way when not taking frequency into account, but can also render much more in-depth sound with it’s “Use High Quality Materials” setting. In this mode, each reflection’s audio is split up into ten frequency bands and processed individually according to the given material’s measured responses in the real world. While being able to do this all in real-time would be wonderful, even the fastest consumer-grade computers can’t really handle it. So, our tradeoff is that we render them in a way that convolution reverbs are able to utilize them (in the form of impulse responses). Also, if you just want to keep it simple, you can preview how the convolved reverb sounds like directly inside of Eigen.