Micro-electro-mechanical actuator device of piezoelectric type and apparatus integrating the micro-electro-mechanical actuator device

Frequency steered sonar array orientation

Piezoelectric ceramic dual-frequency earphone structure

Unimorph-type ultrasound probe and method for manufacturing the same

Loudspeaker with piezoelectric elements

Wearable communication device

Complex device and electronic device having the same

Microphone having closed cell foam body

Electrostatic electroacoustic transducer and fabricating methods for the same

Acoustic generator, acoustic generating device, and electronic device

Decoupled drive unit for a loudspeaker enclosure

Energy harvester device for in-ear devices using ear canal dynamic motion

Method of manufacturing a mechanical resonating structure

Method of manufacturing a resonating structure

Magnetostrictive parametric transducer

Piezoelectric audible signal with spring contacts and retaining and spacer ring