Publications
Secondary acoustic source types for active noise control in free field: monopoles or multipoles?
Xiaojun Qiu, Colin H. Hansen (2000)
Journal of Sound and Vibration, 235 (5), p1005-1009Abstract:
In the field of active noise control, the attenuation achievable is not only highly dependent on the secondary source number and locations, but also on the types of secondary source. A huge amount of work has been directed towards the use of arrays of monopole-like secondary sources and also a certain amount of work has been direct towards the use of higher-order secondary sources. Most of the work can be found listed in the very complete literature review on the concepts and application of active noise control in free field in reference [1] and the following two studies are related closely to the topic of this letter.
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