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A-Weighting for Acoustic Radiation Shaping of a Vibrating Plate

机译：振动板的声学辐射整形的加权

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The investigated method enables precise shaping of acoustic radiation of a vibrating plate, i.e. it allows one to relocate or create resonances and anti-resonances for selected frequencies, simultaneously altering their acoustic radiation efficiency in a desired manner. The method can be very beneficial for plates used as noise barriers, both in passive and active applications. The acoustic radiation shaping method involves mounting several additional ribs and masses to the plate surface at locations followed from an optimization process (sensors and actuators can also be included, if active control is considered). The optimization process requires a model of the vibroacoustic system, a cost function corresponding to the considered objective, and an optimization algorithm. In this paper, an introduction of A-weighting to the cost functions, which reflects a human perception of the noise radiated by or transmitted through the plate, is investigated. It follows from the analysis of obtained results that the introduction of A-weighting can provide even 8 dBA better passive noise attenuation.
机译：研究方法使得能够精确地成形振动板的声辐射，即它允许一个人迁移或产生用于所选频率的共振和防弹，同时以所需的方式改变它们的声学辐射效率。该方法对于被动和有源应用中的噪声屏障的板材非常有益。声辐射成形方法包括将若干附加肋和肿块安装到位于位置的位置处，然后如果考虑有源控制，也可以包括传感器和致动器。优化过程需要vibroonoustic系统的模型，对应于所考虑的目标的成本函数，以及优化算法。在本文中，研究了对成​​本函数的加权引入，这反映了通过板透射或透射通过板的噪声的人类感知。从获得的结果的分析中遵循，即加权的引入可以提供8 dBA更好的被动噪声衰减。

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