Department of Mechanical Science and Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi, Tokyo 192-0015, Japan
JASA Express Lett. 2021 Jul;1(7):072801. doi: 10.1121/10.0005602.
A technique for confining the acoustic fields near loudspeaker arrays is proposed for personal audio systems. The proposed technique is based on tangent line method (TLM), which enables the production of circular acoustic beams. The produced beams are focused at a point designated as the listening point. Performance of the TLM-based method and acoustic contrast control (ACC) is compared. In terms of the acoustic contrast and array effort, the TLM-based method is not superior to the ACC but is comparable with the ACC under certain conditions. The advantage of the TLM-based method is the simplicity in signal processing.
提出了一种用于扬声器阵列近场声限制的技术，用于个人音频系统。所提出的技术基于切线法（TLM），能够产生圆形的声场。产生的波束聚焦在指定的聆听点上。比较了基于 TLM 的方法和声对比控制（ACC）的性能。就声对比和阵列努力而言，基于 TLM 的方法并不优于 ACC，但在某些条件下与 ACC 相当。基于 TLM 的方法的优点是信号处理简单。
