Silencer With Tunable Resonators for Active Noise Control | Zendy

Olivier Cherrier | Zendy; Valérie PommierBudinger | Zendy

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Silencer With Tunable Resonators for Active Noise Control

Author(s) -

Olivier Cherrier,

Valérie PommierBudinger

Publication year - 2012

Publication title -

hal (le centre pour la communication scientifique directe)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.1115/esda2012-83011

Subject(s) - resonator , silencer , acoustics , active noise control , noise control , noise (video) , electrical impedance , acoustic impedance , displacement (psychology) , materials science , physics , computer science , engineering , optoelectronics , noise reduction , electrical engineering , mechanical engineering , psychology , artificial intelligence , ultrasonic sensor , psychotherapist , image (mathematics) , inlet

The article deals with active noise control and presents a silencer made of tunable acoustic resonators to reduce variable tonal noises. The silencer is composed of baffles with acoustic resonators made of two superposed and identically perforated plates associated with cavities. One of the plates is mobile and its displacement is controlled by an electromechanical system, allowing changing the internal shapes of the holes of the perforated layers. Consequently the impedance of the resonators and their resonance frequencies can be controlled. These tunable resonators can be used for noise control of variable tonal noises such as those generated by fans for example. The advantages of the proposed system are the simplicity of the actuation and the compactness of the system.

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