用声源阵列实现个人听觉区与屏蔽通信，让声音只在指定区域被听到。
Personal Sound Zones and Shielded Localized Communication through Active Acoustic Control
- 通过非辐射耦合声源阵列，实时控制特定区域的声场分布。
- 在目标区域内形成清晰声场，外部区域声压接近零。
- 适用于隐私保护语音通信和车内个性化音频场景。
本文提出一种时域扩展的声场调控策略，基于作者前期关于操控标量赫姆霍兹场的研究，重点探讨两个应用场景：(1) 在封闭空间内创建个人听觉区；(2) 实现屏蔽式局部通信。该策略利用一组几乎不辐射能量的耦合声源阵列，在控制区域内生成期望声场，同时确保更大包围球外声压为零。论文回顾了主要理论成果，并详细阐述了傅里叶合成方法，通过相关仿真验证了该策略的有效性。
原文摘要 · Abstract (English)
In this paper, we present a time domain extension of our strategy on manipulating radiated scalar Helmholtz fields and discuss two important applied scenarios, namely (1) creating personal sound zones inside a bounded domain and (2) shielded localized communication. Our strategy is based on the authors' previous works establishing the possibility and stability of controlling acoustic fields using an array of almost non-radiating coupling sources and presents a detailed Fourier synthesis approach towards a time-domain effect. We require that the array of acoustic sources creates the desired fields on the control regions while maintaining a zero field beyond a larger circumscribed sphere. This paper recalls the main theoretical results then presents the underlying Fourier synthesis paradigm and show, through relevant simulations, the performance of our strategy.
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