Creates ~60Hz sine by passing white noise through a multi-stage low-pass filter and reamplifying. Can be built IRL with a +/- supplied op-amp (e.g. 741 or LM348) and E12 components.
Parallel component equivs: 0.2uF, 7.5kOhm, 90.9090...kOhm (A = -12.1212...)
Shake to start. Builds slowly, but clips negligibly.
