TRANSDUCER IMPLEMENTATION OF BONE CONDUCTION EARPHONE

• Main Author: WIRIANTO (NIM : 13214040), ERIK
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26958
• Institution: Institut Teknologi Bandung

<p align="justify"> Bone conduction earphone use bone conduction method to transmit sound from environment to human. Bone conduction use bones, especially facial bones, as conduction element for sound vibration. In other hand, in air conduction, which is more common ways for sound conduction, sound travels through air and is received by ears of human. That difference causes bone conduction system to have different transducer than air conduction system. To build a bone conduction transducer, two main components are needed, which are copper coil and magnet. The important part in transducer implementation is designing transducer structure, making the coil, and testing the transducer. A reference transducer is bought and its characteristics are measured, then the measured characteristics, inductance and impedance, are used as a calculation variable to the coil number of turns. Transducer testing is done by evaluating the frequency response of the transducer. The frequency response is obtained by measuring the vibration of transducer using accelerometer after getting white noise as audio input. The response is then compared with the response of reference transducer. <p align="justify">