This tool shows the periodic system response for a harmonic oscillator with natural circular frequency ω_n driven by a periodic signal of fixed period 2π.

The time series plane shows the input signal in cyan and the periodic system response in yellow.
When the mouse is rolled over the plane, cursor crosshairs and the values of t and x are displayed.

Click the [v] menu button in the lower right to display the list of signals. Click one of the signals to select it.

Click or drag the ω_n slider at the right to set the natural circular frequency of the harmonic oscillator.
Click one of the slider step buttons, < or >, to step the value of ω_n by hundredths.
Above the ω_n slider is a graph of the root mean square size of the system response. The RMS value corresponding to the current value of ω_n is marked by a yellow diamond.

c 2001 H. Hohn