用统一框架实现声学隐身、全息与伪装，一法通三用。
Acoustic disguising: a unified framework for cloaking and holography
- 通过边界条件调控实现声场操控，统一处理隐身与全息问题。
- 用异质格林函数可无损替换物体声学特征，实现身份伪装。
- 仿真验证支持实时3D声学隐身与克隆，适合智能声学系统设计。
隐身与全息通常被视为独立问题，但本文将其统一为一种称为声学伪装的操作，通过闭合表面的沉浸式边界条件实现。以均匀格林函数驱动边界，可在封闭区域内抑制任意入射波，实现未知物体的宽带隐身；以散射格林函数驱动，则可合成一个在任意照明下无法与目标区分的全息散射体。结合两者，使用非均匀格林函数，可将一个物体的散射特征完全替换为另一个物体，从而改变其声学身份。研究通过三维时域有限差分（FDTD）模拟，采用脉冲格林函数驱动，并辅以数据驱动的格林函数获取方法，建立了实时三维声学隐身、全息、克隆与伪装的直接路径。
原文摘要 · Abstract (English)
Cloaking and holography -- usually treated as distinct problems -- are two limits of a single operation that we call acoustic disguising, realized here using immersive boundary conditions on a closed surface. Driving the boundary with homogeneous Green's functions suppresses any incident field inside the enclosed volume and cloaks unknown objects broadband; driving it with scattering Green's functions synthesizes a holographic scatterer indistinguishable from a target for arbitrary illuminations. Combining the two, using heterogeneous Green's functions, replaces the scattering signature of one object with that of another, transforming its acoustic identity. We demonstrate the framework in three-dimensional FDTD simulations driven by impulsive Green's functions, complemented by data-driven Green's-function retrieval, establishing a direct route to real-time 3D acoustic cloaking, holography, cloning, and disguising.
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