Localized point sources (monopoles) in an acoustical domain are implemented to a three dimensional non-singular Helmholtz boundary element method in the frequency domain. It allows for the straightforward use of higher order surface elements on the boundaries of the problem. It will been shown that the effect of the monopole sources ends up on the right hand side of the resulting matrix system. Some carefully selected examples are studied, such as point sources near and within a concentric spherical core-shell scatterer (with theoretical verification), near a curved focusing surface and near a multi-scale and multi-domain acoustic lens.

翻译：声学域的局部点源(monopoles)被应用于频率域的三维非同步的Helmholtz边界要素方法,允许在问题边界上直接使用更高排序的表面元素;可以证明,单极源的影响最终出现在由此形成的矩阵系统的右侧;可以仔细研究一些例子,例如,在同心球心心心核心散射器附近和内部的点源(经过理论核查),靠近一个弯曲的聚焦表面,靠近一个多尺度和多尺寸的声学透镜。