Quality and Usability Lab, Deutsche Telekom Laboratories, Technische Universität Berlin, Ernst-Reuter-Platz 7, 10587 Berlin, Germany.
J Acoust Soc Am. 2011 Nov;130(5):2807-16. doi: 10.1121/1.3640850.
An approach to the synthesis of moving virtual sound sources with complex radiation properties in wave field synthesis is presented. The approach exploits the fact that any stationary sound source of finite spatial extent radiates spherical waves at sufficient distance. The angular dependency of the radiation properties of the source under consideration is reflected by the amplitude and phase distribution on the spherical wave fronts. The sound field emitted by a uniformly moving monopole source is derived and the far-field radiation properties of the complex virtual source under consideration are incorporated in order to derive a closed-form expression for the loudspeaker driving signal. The results are illustrated via numerical simulations of the synthesis of the sound field of a sample moving complex virtual source.
提出了一种在波场综合中合成具有复杂辐射特性的运动虚拟声源的方法。该方法利用了任何有限空间范围的静止声源在足够远的距离处辐射球面波这一事实。所考虑的声源的辐射特性的角度依赖性由球面波阵面上的幅度和相位分布来反映。推导出了均匀运动单极子声源发出的声场，并将所考虑的复杂虚拟声源的远场辐射特性纳入其中，以便推导出扬声器驱动信号的闭式表达式。通过对示例运动复杂虚拟声源的声场合成的数值模拟来说明结果。
