Active noise control technique and its application on ships

CHEN Kean

School of Marine Science and Technology，Northwestern Polytechnical University，Xi'an 710072，China

Abstract：Due to the rapid development during past three decades, Active Noise Control（ANC） has become a highly complementary noise control approach in comparison with traditional approaches, and has formed a complete system including basic theory, investigation approach, key techniques and system implementation. Meanwhile, substantial progress has been achieved in such fields as the practical application, industrialization development and commercial popularization of ANC, and this developed technique provides a practical and feasible choice for the active control of ship noise. In this review paper, its sound field analysis, system setup and key techniques are summarized, typical examples of ANC-based engineering applications including control of cabin noise and duct noise are briefly described, and a variety of forefronts and problems associated with the applications of ANC in ship noise control, such as active sound absorption, active sound insulation and smart acoustic structure, are subsequently discussed. Key words：Active Noise Control（ANC）；sound field analysis；ship noise