1. Application of a Multipole Secondary Source for Propeller Active Noise Control
- Author
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Muhammad Kusni, Harijono Djojodihardjo, and Benjamin Soenarko
- Subjects
Engineering ,business.industry ,Noise reduction ,Acoustics ,Propeller ,General Medicine ,Secondary source ,Reduction (complexity) ,Noise ,Electronic engineering ,Noise control ,Multipole expansion ,business ,Active noise control - Abstract
The commercial feasibility of active noise control (ANC) is very promising due to its capability beyond passive noise control (PNC). To some extent ANC becomes a complement of PNC. The active noise reduction is also capable and beneficial in reducing noise selectively. However, the active noise reduction using a conventional secondary source can become very complicated if a significant noise level reduction is required, since a large number of secondary sources will be needed. The active noise reduction is also less effective for reducing high-frequency noise. With such perspectives, a novel approach has been developed using a multipole secondary source to addressthe problems mentioned. In addition, the multipole secondary source will be used for numerical simulation of noise reduction in of propeller noise source in a free field.
- Published
- 2014