Differentiable White-Box Virtual Analog Modeling

Fabián Esqueda; Boris Kuznetsov; Julian D. Parker
DAFx-2021 - Vienna (virtual)
Component-wise circuit modeling, also known as “white-box” modeling, is a well established and much discussed technique in virtual analog modeling. This approach is generally limited in accuracy by lack of access to the exact component values present in a real example of the circuit. In this paper we show how this problem can be addressed by implementing the white-box model in a differentiable form, and allowing approximate component values to be learned from raw input–output audio measured from a real device.