I’ve lost the link but at some point, I saw a video where they started with the physical equations for a spring model, and it reduced to – wait for it – one feedforward term and two feedback terms. Many types of second order bandpass filters are also calculated as one feedforward term and two feedback terms, meaning that (at minimum) some types of BPFs are spring-model resonators.
I’ve used a low-frequency bandpass filter as a control signal – the natural decay toward its resting state is quite convincing.
hjh