Preliminary investigation of active control of dipole noise sources

Ann Nakashima, Jingnan Guo, Murray Hodgson


The effectiveness of a control system on a directional dipole noise source was discussed. It was found that a primary source with a non-cylindrical radiation directivity affected the performance of the control system. The analysis showed that the control system worked more effectively when it was used to create quiet zones in the area with the strongest primary-radiation directivity.


Acoustic fields; Arrays; Attenuation; Control systems; Frequencies; Microphones; Active noise control (ANC) systems

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