[Problem] To achieve suitable frequency characteristics of a sound pressure. [Solution] An acoustic generator of one mode is provided with an exciter, a vibrating body, and a damping material. The exciter vibrates when an electric signal is inputted thereto. The exciter is attached to the vibrating body, and the vibrating body vibrates along with the exciter when the exciter vibrates. The damping material is attached so as to vibrate along with the vibrating body and the exciter, and the thickness of the damping material in the direction that is orthogonal to the vibration surface of the vibrating body is uneven.