A steerable parametric loudspeaker array is known for its directivity and narrow beam width. However, it often suffers from the grating lobes due to periodic array distributions. Here we propose the array configuration of hyperuniform disorder, which is short-range random while correlated at large scales, as a promising alternative distribution of acoustic antennas in phased arrays. Angle-resolved measurements reveal that the proposed array suppresses grating lobes and maintains a minimal radiation region in the vicinity of the main lobe for the primary frequency waves. These distinctive emission features benefit the secondary frequency wave in canceling the grating lobes regardless of the frequencies of the primary waves. Besides that, the hyperuniform disordered array is duplicatable, which facilitates extra-large array design without any additional computational efforts.

翻译：可操控参量扬声器阵列因其指向性和窄波束宽度而著称，但周期性阵列分布常导致栅瓣问题。本文提出超均匀无序阵列构型——一种在短程随机分布的同时保持大尺度关联性的声学天线分布方案，作为相控阵中极具潜力的替代方案。角度分辨测量表明，该阵列可抑制栅瓣，并在基频波主瓣附近维持最小辐射区域。这些独特的发射特性使次级频波能够不受基频波频率影响地消除栅瓣。此外，超均匀无序阵列具有可复制性，无需额外计算即可实现超大规模阵列设计。