4 citations · 4 across the 4 of their papers we have counts for
4 papers
Design, analysis, and experimental validation of a stepped plate parametric array loudspeaker
Woongji Kim, Beomseok Oh, Chayeong Kim +1
This study investigates the design and analysis of a stepped plate parametric array loudspeaker (SPPAL) as an alternative to conventional array-based parametric loudspeakers. The S…
An accurate measurement of parametric array using a spurious sound filter topologically equivalent to a half-wavelength resonator
Woongji Kim, Beomseok Oh, Junsuk Rho +1
Parametric arrays (PA) offer exceptional directivity and compactness compared to conventional loudspeakers, facilitating various acoustic applications. However, accurate measuremen…
Underwater Willis lens for broadband low-frequency focusing
Beomseok Oh, Dongwoo Lee, Yeon-Seong Choo +4
Broadband underwater sound focusing in the low-frequency range is essential for various applications such as battery-free environmental monitoring and sensing. However, achieving l…
Demonstrating a Bi-directional Asymmetric Frequency Conversion in Nonlinear Phononic Crystals
Yeongtae Jang, Beomseok Oh, Eunho Kim +1
Beyond the constraints of conservative systems, altering wave propagation frequency emerges as a crucial factor across diverse physical domains. This Letter demonstrates bi-directi…