Yuki Tamai, Satoshi Kagami, Hiroshi Mizoguchi, Koichi Nagashima. Simultaneous generation/capture of multiple focuses sound beams. In Proceedings of the IEEE International Conference on Systems, Man & Cybernetics: Washington, D.C., USA, 5-8 October 2003. pages 4613-4618, IEEE, 2003. [doi]
Abstract is missing.