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patent

Plasma based noise reduction system

Sergeev, Stanislav  
•
Lissek, Hervé  
•
Volery, Maxime  
2023

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.

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Type
patent
EPO Family ID

76829357

Author(s)
Sergeev, Stanislav  
Lissek, Hervé  
Volery, Maxime  
Note

Alternative title(s) : (de) Plasmabasiertes rauschunterdrückungssystem (fr) Système de réduction de bruit basé sur plasma

TTO classification

TTO:6.2174

EPFL units
AVP-R-TTO  
DOICountry codeKind codeDate issued

US11790881

US

B2

2023-10-17

US2023020879

US

A1

2023-01-19

EP4116967

EP

A1

2023-01-11

Available on Infoscience
February 6, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/194634
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