Kyocera Corporation

Hideaki Fujimoto

Seiji Horii

Atsuo Chiba

Takashi Ikegami

Satoshi Fukami

Akinori Wada

Daisuke Tsuiki

Hiroshi Taimura

Kazuya Sono

Yuta Sakamoto

A sound generator includes at least one piezoelectric vibrator including a piezoelectric element, a vibration unit in one of a non-contact state not contacting the at least one piezoelectric vibrator and a contact state contacting the at least one piezoelectric vibrator. While in the contact state, the at least one piezoelectric vibrator generates vibration in response to a signal, and causes a contact surface contacted by the vibration unit to vibrate and generate a sound to be emitted from the contact surface. The sound generator can detect driving allowed and driving denied states, and control application of a sound signal in accordance with the two states to the piezoelectric element.

Sound generator and sound generation system

A sound generator includes a piezoelectric vibrator () including a piezoelectric element (), an anchor applying a load to the piezoelectric vibrator (), and a control unit () configured to control an input voltage based on a frequency characteristic, the input voltage being applied to the piezoelectric element () as a sound signal. While the load from the anchor is being applied to the piezoelectric vibrator (), the piezoelectric vibrator () deforms in accordance with the input voltage applied to the piezoelectric element () from the control unit (), and deformation of the piezoelectric vibrator () vibrates a contact surface () contacted by the sound generator, causing sound to be emitted from the contact surface ().

Growing community of inventors

Yokohama, Japan

Hideaki Fujimoto