Musical apparatus using multiple light beams to control musical tone signals

摘要: A musical apparatus which controls a variety of parameters tones by detecting motion an object in space adjacent to the apparatus. More specifically, may comprise tone signal generator generates signal, at least one light source radiates beams into apparatus, detector detects two reflected from and detection value for each said beams, computing element receives values synthesized value; controller based on value. For example, be sum values, difference between ratio or some other relationship values.