This image created with the
spectrum intercept algorithm
is based on the dynamical system expressed by,
where x' is the first derivative of x with respect to time, t, and x'' is the second derivative of x with respect to time.
The parameters are, a=1, ω=1, φ=0, b=1 and μ=1.
This image differs from the Stress image in that, in the spectrum intercept algorithm, here we integrate four times as long as in Stress, and in that the domain is somewhat reduced here.