Communications giant Motorola has invested in Israeli start-up VocalZoom, which has developed an optoelectronic microphone able to substantially enhance a speaker’s voice over any background noise. The technology creates a “virtual cube” in space, sensing sound from only within the cube.
http://www.globes.co.il/en/article-motorola-solutions-invests-in-israeli-co-vocalzoom-1000999236