dorsal/arxiv
View SchemaActive control of scattered acoustic radiation: a real-time implementation
| Authors | Emmanuel Friot, Régine Guillermin, Muriel Winninger |
|---|---|
| Categories | |
| ArXiv ID | physics/0511164 |
| URL | https://arxiv.org/abs/physics/0511164 |
Abstract
This paper presents an active noise control experiment designed to validate a real-time control strategy for reduction of the noise scattered from a three-dimensional body. The control algorithm relies on estimating the scattered noise by linear filtering of the total noise measured around the body; suitable filters are identified from off-line measurements. A modified Filtered-Error Least-Mean-Squares algorithm then leads to the adaptive filters which drive the secondary sources. The paper provides the numerical simulations using a Boundary Element Method which helped in designing a feasible experiment in an anechoic chamber with a limited number of control sources. Eventually a real-time pure-tone implementation with 14 ordinary loudspeakers and a large body is shown to yield on average a 10 dB reduction of the scattered noise at the error sensors, which is close to the optimum reduction predicted by the numerical simulations for the sensor arrangement.
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"abstract": "This paper presents an active noise control experiment designed to validate a\nreal-time control strategy for reduction of the noise scattered from a\nthree-dimensional body. The control algorithm relies on estimating the\nscattered noise by linear filtering of the total noise measured around the\nbody; suitable filters are identified from off-line measurements. A modified\nFiltered-Error Least-Mean-Squares algorithm then leads to the adaptive filters\nwhich drive the secondary sources. The paper provides the numerical simulations\nusing a Boundary Element Method which helped in designing a feasible experiment\nin an anechoic chamber with a limited number of control sources. Eventually a\nreal-time pure-tone implementation with 14 ordinary loudspeakers and a large\nbody is shown to yield on average a 10 dB reduction of the scattered noise at\nthe error sensors, which is close to the optimum reduction predicted by the\nnumerical simulations for the sensor arrangement.",
"arxiv_id": "physics/0511164",
"authors": [
"Emmanuel Friot",
"R\u00e9gine Guillermin",
"Muriel Winninger"
],
"categories": [
"physics.class-ph"
],
"title": "Active control of scattered acoustic radiation: a real-time implementation",
"url": "https://arxiv.org/abs/physics/0511164"
},
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