This is a demonstration of adding sound information to simulations of dynamic systems. Below are several video files of dynamic system simulations, with audio tracks representing certain variables as musical pitches.

For more background, look here.

You will need quicktime.

• Cart decelerates
  
  Single sound, represents distance moved from the left.

• Pendulum, mode1.
  
  Two sounds, Synth represents angle of the rod, piano represent angle of the rotation of the plate.

• Pendulum, mode2.
  
  Two sounds, Synth represents angle of the rod, piano represent angle of the rotation of the plate.

• Spring and two bodies, mode1.
  
  Two sounds, synth represents rotational velocity, piano represents the derivative of the distance between the bodies.