Low-Frequency Ultrasonic Communication for Speech Broadcasting in Public Transportation. - Kwang Myung Jeon; Nam Kyun Kim; Chan Woong Kwak; Jung Min Moon; Hong Kook Kim (INTERSPEECH, 2017)

Single-channel speech dereverberation based on block-wise weighted prediction error and nonnegative matrix factorization. - Chan Woong Kwak; Kwang Myung Jeon; In Young Park; Hong Kook Kim; Jeong Eun Lim; Ji Hyun Park (ICCE, 2018)