Em-tech Co., Ltd.

Jeong Ae Ha

Cheon Myeong Kim

Ji Young Lee

Jae Hwa Lim

Byung Ho Jung

Byung Min Yu

Sung Jin Hong

Kyeong Min Lee

Disclosed is a sound vibration sensor using a piezoelectric element having a cantilever structure. The sound vibration sensor includes a housing forming an exterior, a piezoelectric element having a cantilever structure installed in the housing, a support structure supporting a fixed end of the piezoelectric element, a weight attached to a free end of the piezoelectric element, and an energizing part configured to transmit an output from the piezoelectric element, wherein the sound vibration sensor comes into contact with a speaker's body, receives vibration of the body generated when the speaker utters a sound through the housing, and amplifies the vibration by the free end of the piezoelectric element to detect the voice vibration of the speaker using a piezoelectric characteristic of the piezoelectric element.

Sound vibration sensor using piezoelectric element having cantilever structure

Disclosed is a translation system using a sound vibration microphone capable of fundamentally blocking noise by detecting vibrations generated from a user's voice using a piezo element. The translation system using a sound vibration microphone includes a first earset including a sound vibration sensor and a speaker, a first wearable acoustic device including a microphone and a speaker and performing wireless communication with the first earset, and a first electronic communication device performing wireless communication with the first wearable acoustic device and performing communication with a translation server, wherein the first wearable acoustic device and the first electronic communication device are in a communicatable state.

Translation system using sound vibration microphone

A bone conduction speaker is provided. The bone conduction speaker includes: a housing forming an exterior; a stator including a pole piece fitted to a bottom of the housing and a voice coil arranged to an outer circumference of the pole piece; a vibrator including a permanent magnet mounted concentrically with the pole piece and voice coil, with an air gap from the pole piece, a weight attached to the permanent magnet to increase a vibration force, and a yoke attached to the permanent magnet and weight; a flexible printed circuit board mounted on the bottom of the housing, part of which extends out of the housing, and configured to transmit a signal to the voice coil; and a bone conduction pad attached to an outer surface of the housing. The vibration of the vibrator is transmitted to a bone of a user through the housing and bone conduction pad.

Bone conduction speaker

The present invention is intended to provide a sound generating actuator which can facilitate heat dissipation from a voice coil. According to the present invention, there is provided a sound generating actuator, including: a frame; a stationary part mounted on the frame and provided with a yoke, a magnet and a top plate to compose a magnetic circuit; a voice coil configured to receive an electrical signal and vibrate due to a magnetic field and mutual electromagnetic force of the stationary part; a spring configured to dampen vibration of the voice coil and that is made of a metallic material and secured to the frame; and a contact pad that is attached to the spring and configured to transfer vibration of the voice coil.

Sound generating actuator

An actuator is provided that is attached to an electronic device and configured to generate sound and vibration. The actuator includes: a first casing having sidewalls and a bottom; a second casing affixed to the first casing and forming a top; a printed circuit board attached to the first casing and configured to transmit a signal; a voice coil configured to receive the signal from the printed circuit board; and a vibrator configured to vibrate by an electromagnetic force produced through an interaction with the voice coil. The first casing forms a surface that is attached to the electronic device.

Growing community of inventors

Gyeongsangnam-do, South Korea

Jeong Ae Ha