稀缺的扬声器阵列设计用于带宽频率不变光束形成与多个目标.
Keyu Pan1, Simiao Chen1, Yiming Han1
1Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China.
The Journal of the Acoustical Society of America
|January 21, 2025
概括
这项研究引入了一种用于设计稀疏扬声器阵列的新方法,这些阵列可以有效地创建多个声音束. 这种方法可以减少所需的驱动器数量,同时保持声音质量,节省成本和设计时间.
科学领域:
- 声学 声学 在声学上
- 信号处理 信号处理
- 阵列设计 阵列设计
背景情况:
- 目前的稀疏阵列设计方法优化单向,限制多通道音响系统.
- 多个方向的宽带频率不变光束成形对于先进的声音应用至关重要.
研究的目的:
- 为稀疏扬声器线路阵列提出一种新的设计方法.
- 在多个目标方向实现宽带不变频束.
- 为了减少光束成型系统中的驱动器数量和计算成本.
主要方法:
- 开发了一个被挖掘的延迟线模型.
- 提出了一种两阶段的设计方法:压力传感与扩展的快速代收缩值算法用于驾驶员放置,其次是驾驶员激发的最小平方.
- 数字模拟用于验证.
主要成果:
- 与统一的线性数组相比,驾驶员数量减少了32.3%.
- 保持了频率不变的光束特性.
- 该算法展示了显著的计算效率.
结论:
- 拟议的方法使稀疏扬声器阵列的高效设计能够实现多方向光束成形.
- 这种方法适用于声音投影,并且可以扩展到其他多通道光束成形系统.
- 该方法可以降低系统成本和设计时间,同时确保可靠的光束性能.
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