The AudioStrobe technique uses a control signal embedded into the music on the CD. Because the signals are mastered at the same time as the CD, a very precise synchronization of audio and visual stimulation can be achieved. These control signals cannot be perceived by the human ear, as they are outside of our normal audible range. Because of this, AudioStrobe CDs can also be used as normal music CDs outside of a light & sound machine session. AudioStrobe technology was invented in Germany by a composer and biomedical researcher named Andrzej Slawinski. AudioStrobe technology moves you into a state of synethesia by using synchronized light, color and music. These Audiostrobe CDs are compatible with the Mind Modulations Proteus & Sirius Light and Sound Mind Machines