The Neuron Audio System uses a type of resynthesis where the synthesis itself is adapted to the sound. The basis function(s) used to resynthesize this sound are determined by evaluating its underlying model. It is this concept that allows not only a faithful reproduction but also a vast variety of modifications of the basic instrument.
To synthesize the sound, the underlying model of the sound generator has to be estimated from and adapted to the sonic qualities of the original sampled sound. The Neuron System analyzes both the type of vibrating medium as well as the resonant corpus used to shape the sound. This process is computationally very demanding, which is why it is done at the analysis stage. A pattern recognition process based on Artificial Neural Networks is used to create a model from the sound. If the sound cannot be uniquely represented by a single model (which may be the case for drum loops and complete musical pieces) it is constructed from a time variable morph between different models representing the sound at that instant.
After the pattern recognition stage, the basic model is subsequently refined and its parameters are adjusted in a way to reproduce the original sound as accurately as possible. The accuracy is determined by the „Complexity parameter" inside the ModelMaker application. Complex models are built from a set of simpler models, up to the limit set by the complexity constraint. Basic properties such as the size of the resonant body, material and esasticity (determined and accessed through the so-called Parameter set) can be influenced and combined from other models during the resynthesis.
But what's a model in the Neuron? Any guesses?
A naive guess would be that it uses a database of some wavelets or just some waveforms and then performs autocorrelation or similar to windowed chunks of the input audio and matches the individual windows taken from the input sound waveforms in the database, e.g one waveform per window. Then it uses this waveform in the resynthesis of that window. And this may lead to improved sound quality.
But what's this
The Neuron System analyzes both the type of vibrating medium as well as the resonant corpus used to shape the sound.