Air conduction is the primary pathway for hearing sounds and is widely utilized in various hearing devices. In contrast, other forms of sound conduction—such as bone and cartilage conduction—have not been as commonly applied. However, recent advancements in device development have expanded the applications of these alternative conduction methods across various fields. This Special Issue addresses the mechanisms and practical uses of these methods. Since 2017, a new hearing device utilizing cartilage conduction has been developed and released in Japan. It has gained rapid popularity and is now recognized as one of the primary types of hearing device. Reflecting this trend, most of the contributions in this Special Issue focus on cartilage conduction and hearing aids, with studies submitted from various institutions in Japan.

This book is included in DOAB.