Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2014/09/01 Vol. E97-ANo. 9pp. 1859-1866 Type of Manuscript: Special Section PAPER (Special Section on Spatial Acoustic Signal Processing and Applications) Category: Keyword: beamsteering, spatial aliasing, ultrasonic transducer array, parametric loudspeaker, nonlinear acoustics,