Aircraft noise reduction wallboard based on acoustic metamaterial

The invention relates to the technical field of noise control in an aircraft cabin, in particular to an aircraft noise reduction wallboard based on an acoustic metamaterial. The aircraft noise reduction wall plate based on the acoustic metamaterial sequentially comprises an aircraft wall plate, aircraft cotton, a metamaterial sound absorption plate and/or a metamaterial sound insulation thin plate and an inner decoration plate surface layer in the direction from the outside to the inside of a cabin. The invention provides three light acoustic metamaterial noise reduction wallboards by utilizing a sub-wavelength noise reduction mechanism of an acoustic metamaterial and an impedance matching principle of the acoustic metamaterial and a traditional porous acoustic material, and the three light acoustic metamaterial noise reduction wallboards are used for absorbing and isolating structural radiation noise and air transmission noise caused by operation of an aircraft engine and a turbulent boundary layer; the airc