Osong Medical Innovation Foundation, Korea University Research and Business Foundation

Hyung Keun Chung

Young June Moon

Proposed is an earplug that can effectively reduce high-frequency noise using a metasurface. The high-frequency noise filtering earplug using a metasurface according to an embodiment of the present disclosure may include an eartip with an internal passage, an interference attenuation module having a damping passage for reducing noise and a first reflective cavity that is connected to the damping passage and reflects incident sound waves and transmits the sound waves to the damping passage, and a connecting tube installed between the eartip and the interference attenuation module to connect the internal passage and the damping passage to each other.

Growing community of inventors

Seongnam-si, South Korea

Hyung Keun Chung