Abstract: A vehicle speaker including a panel, a giant magnetostrictive vibrator, and a vibration transmission pad. The panel is used as a diaphragm for producing high-frequency sound and forms part of a vehicle. The giant magnetostrictive vibrator is used as a vibration exciter for the panel and includes a vibration output shaft that vibrates in accordance with a signal for producing high-frequency sound. The vibration transmission pad is fixed to the panel and connected to the vibration output shaft in a manner enabling vibration transmission. The vibration transmission pad vibrates the panel when the vibration output shaft vibrates.

Abstract: An electronic device is provided with a magnetostriction apparatus and a main body. The magnetostriction apparatus includes a super magnetostrictor which extracts and contracts in accordance with a magnetic field, a coil and bias magnets which generate the magnetic field, and a housing which maintains the components at predetermined positions. The magnetostriction apparatus is fitted to the main body such that the super magnetostrictor is perpendicular to the face of the main body where the apparatus is fitted. The housing is connected to the main body so that a predetermined pressure is applied to the super magnetostrictor by the main body and the housing.

Abstract: A pickup is provided in an electric guitar to detect sound generated by the electric guitar. The pickup is fitted between the housing of the body of the electric guitar and a string. The pickup includes a magnetostrictor the magnetic characteristic of which varies depending on the vibration of the string; a detector operative to detect the variation in the magnetic characteristic of the magnetostrictor as an electric signal; and a supplier operative to supply the electric signal detected by the detector to a signal processor. Certain stress is applied to the magnetostrictor by the string of the electric guitar and the housing of the body.

Abstract: A vehicle speaker including a panel, a giant magnetostrictive vibrator, and a vibration transmission pad. The panel is used as a diaphragm for producing high-frequency sound and forms part of a vehicle. The giant magnetostrictive vibrator is used as a vibration exciter for the panel and includes a vibration output shaft that vibrates in accordance with a signal for producing high-frequency sound. The vibration transmission pad is fixed to the panel and connected to the vibration output shaft in a manner enabling vibration transmission. The vibration transmission pad vibrates the panel when the vibration output shaft vibrates.