Modulated
The Modulated amplitude defines the following functions.
\[ A(t)=A_0\Pi_{i=1}^{n}\sin(2\pi\omega_i{}(t-t_0))\quad\text{for}\quad{}t>t_0. \]
In the above definition, \(t_0\) is the (pseudo) start time of the step in which the amplitude is defined, \(\omega_i\) is the circular frequency.