Invention Grant
- Patent Title: Plasma based noise reduction system
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Application No.: US17857622Application Date: 2022-07-05
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Publication No.: US11790881B2Publication Date: 2023-10-17
- Inventor: Stanislav Sergeev , Hervé Lissek , Maxime Volery
- Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
- Applicant Address: CH Lausanne
- Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
- Current Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
- Current Assignee Address: CH Lausanne
- Agency: Nixon & Vanderhye P.C.
- Priority: EP 184056 2021.07.06
- Main IPC: G10K11/178
- IPC: G10K11/178

Abstract:
An active noise reduction system (2) comprising an electroacoustic plasma transducer (5) for mounting in an installation structure and an acoustic sensing system (11). The electroacoustic plasma transducer comprises a plasma electrode arrangement (6) including a collector electrode (8) and a corona electrode (9), and a control system (7) connected to the plasma electrode arrangement for supplying power to the plasma electrode arrangement. The control system comprises a controller (12), and a amplification circuit (13). The acoustic sensing system is connected to the control system providing a measurement signal of an environmental sound to control the output of the electroacoustic transducer for reducing noise. The control system comprises a filter implementing a control transfer function θ(ω) based on a model of the electroacoustic plasma transducer.
Public/Granted literature
- US20230020879A1 PLASMA BASED NOISE REDUCTION SYSTEM Public/Granted day:2023-01-19
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