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OPTIMIZATION OF AN ACTIVE NOISE CONTROL SYSTEM USING SPHERICAL HARMONICS EXPANSION OF THE PRIMARY FIELD

โœ Scribed by T. Martin; A. Roure

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
300 KB
Volume
201
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

The design of an active noise control system involves several steps. One of the most important is to find the best locations of the control sources and error sensors according to the primary source distribution and its spectrum. Thus the first step in this optimization problem is to obtain an analytical expression for the primary sound field. In this work this was done by using a spherical harmonics expansion, determined on the basis of measurements of the primary field. It is shown how, by using such an expansion, a method can be developed for optimizing the transducer locations for the case of free field radiation of a period general primary source. Finally it is shown how this measurement database can be used to choose a good compromise between the number and the locations of the error sensors.

๐Ÿ“œ SIMILAR VOLUMES

ACTIVE NOISE CONTROL OF ACOUSTIC SOURCES
ACTIVE NOISE CONTROL OF ACOUSTIC SOURCES USING SPHERICAL HARMONICS EXPANSION AND A GENETIC ALGORITHM: SIMULATION AND EXPERIMENT
โœ T. Martin; A. Roure ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 316 KB

A general method is presented to optimize transducer location in an active noise control problem. The method includes two parts. First, the actuator configuration is determined by using a model of the primary field which is a spherical harmonics expansion. In the second part, a genetic algorithm is