Comparisons among different types of hearing aids : a pilot study on ergonomic design of hearing aids

Abstract

Hearing aids are widely used by people with hearing loss. In the current market, various hearing aids can be selected based on the users’ demands. Previous research mostly concentrated on ear anthropometry and auditory function to explore fit and comfort of hearing aids. Even though Computer-Aided Design (CAD) simulation and virtual reality methods were used to examine the fit of earphones and specific hearing aids, how to achieve a proper fit for different types of hearing aids was not sufficiently studied. This study compares sizes and shapes among existing commercial hearing aids, and further proposes guidance in ear anthropometry for ergonomic design of hearing aids. Product parameters, including width, height, length, and weight, were measured for Behind-The-Ear (BTE) aids, In-The-Ear (ITE) aids, and In-The-Canal (ITC) aids individually. Selected hearing aids were fitted on the external ear of participants while recording their fit and comfort preferences. The findings of the study revealed the differences among BTE, ITE and ITC aids, and highlighted the anthropometric data for hearing aid design. Based on the findings of the study, potential research gaps were identified for future research.