DESIGN AND TESTING BONE CONDUCTION EARPHONE SYSTEM

• Main Author: BAGUS PRADHANA BASOEKI - NIM: 13214063 , JONATHAN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28301
• Institution: Institut Teknologi Bandung

<p align="justify">Bone Conduction Earphone is one type of hearing aid that is used to help people with hearing loss. Bone Conduction Earphones System are made up of five main components: electret microphone, pre-amplifier MAX9814, handmade amplifier, stereo audio amplifier MAX98306, and handmade transducer. The whole system of the bone conduction earphone needs to be tested to determine whether the bone conduction earphone meets the basic purpose of the system, which is to help someone whose eardrum is damaged so they can hear when using this product. There are 2 types of testing designed for this system, that is technical testing and subjective testing. The first test is a technical test used to observe the characterization of a bone conduction earphone system using an acoustic lab space that is useful for viewing the frequency response of the whole system from input to output. The acoustic lab used for this test is semi-anechoic chamber, the purpose of this room is to reduce the interference to system input due to noise or noise from the environment. The second test is a test that involves user assessment, the system is tested based on the STI (Speech-Transmission Index) testing procedure which is useful for analyzing the quality of the system from the user's point of view based on the ability of the system to produce a clear sound. <p align="justify"> <br />