Combat is gritty and varied. You aren't limited to just firearms. You can utilize:
Some DIY and semi-pro audio circles mention the DFM DMOD-12 , a specific digital controller used in high-power speaker builds and PA systems.
Finite differences for the 12th derivative of |x| diverge at x=0. No convergence is achieved as step size decreases.
|x| = x if x ≥ 0 |x| = -x if x < 0