In order to control objects, we need to modeling the object, but if we include the sound and wave medium in the controlled object, it will be difficult to make an accurate model. However, by using robust control theory, it becomes possible to design a stable control system even for controlled objects that are difficult to model. Shown below subject of studies on laboratory.
Thermoacoustic: Experimental elucidation of thermoacoustic phenomenon apply active noise control theory.
Wave dissipating system: Active wave dissipating system using horizontal plate.
Servomotor: Build controller apply controlled object's physical parameter.
Vibration generation: Vibration control using vibration generator.

Thermoacoustic generator displayed on smart community 2016.