ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC DEVICE

摘要

An object is to provide a preferable frequency characteristic of a sound pressure. For achieving the object, an acoustic generator according to an embodiment includes a piezoelectric element (exciter), a flat vibration plate, and a frame body. The piezoelectric element receives input of an electric signal and vibrates. The piezoelectric element is attached to the vibration plate, and the vibration plate vibrates together with the piezoelectric element with the vibration of the piezoelectric element. The frame body is provided on an outer circumferential portion of the vibration plate. Corners on an inner circumferential surface of the frame body include at least curved surfaces, and at least one of the corners has a shape different from the shape of the other corners.

主权项

1. An acoustic generator comprising:
an exciter that receives input of an electric signal and vibrates; a vibration plate to which the exciter is attached and that vibrates together with the exciter with vibration of the exciter; and a frame body that is provided on an outer circumferential portion of the vibration plate, wherein corners on an inner circumferential surface of the frame body include at least curved surfaces, and at least one of the corners has a shape different from the shape of the other corners.