Applied Acoustics

House C., Cheer J., Daley S.

Acoustic cloaking is of interest in many applications where the presence of an object has an undesirable impact on the sound-field. In this paper, a broadband active control system is used to minimise the scattered acoustic pressure at a far-field microphone array using an array of structural control sources affixed to the flexible scattering body. Data from a measurement setup consisting of a metal cylinder is used to assess the performance of the acoustic cloaking system. The acoustic cloaking system was able to achieve 10 dB of attenuation in the far-field scattered acoustic power, using an array of structural actuators.

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