This paper presents a method to realize an acoustic source for low frequencies with relatively small thickness. A honeycomb plate structure which is open on one side combines the radiating surface and the major part of the air cavity. The vibration of the plate is controlled with a decentralized feedback controller. The fundamental resonance is controlled, as well as higher-order bending modes, while avoiding possible instabilities due to the fluid-structure interaction. The smooth and well defined frequency response enables robust feedforward control for further response equalization. The influence of different actuation principles on the overall system efficiency is compared.
|Publication status||Published - 2017|
|Event||142nd Audio Engineering Society (AES) International Convention 2017 - Maritim Hotel Berlin, Berlin, Germany|
Duration: 20 May 2017 → 23 May 2017
Conference number: 142
|Conference||142nd Audio Engineering Society (AES) International Convention 2017|
|Abbreviated title||AES 2017|
|Period||20/05/17 → 23/05/17|