Norris, an intrepid entrepreneur who has no college degree but more than 43 patents to his name, invented both the crowd control tool, called the Long Range Acoustical Device (LRAD), and the display audio technology, called HyperSonic Sound (HSS).

• 他是一位无谓的企业家，他没有大学文凭，但却有拥有43个专利，他的发明包括人群控制工具，叫做远程声音设备（LRAD），还有展示音频技术，叫做超音速声音（HSS）。