Effective speaker adaptations for speaker verification. - Sungjoo Ahn; Sunmee Kang; Hanseok Ko (ICASSP, 2000)

Model based stress decision method. - Wooil Kim; Taeyun Kim; Sungjoo Ahn; Hanseok Ko (INTERSPEECH, 2001)

On effective speaker verification based on subword model. - Sungjoo Ahn; Sunmee Kang; Hanseok Ko (INTERSPEECH, 2002)

Feature compensation scheme based on parallel combined mixture model. - Wooil Kim; Sungjoo Ahn; Hanseok Ko (INTERSPEECH, 2003)

Background noise reduction via dual-channel scheme for speech recognition in vehicular environment. - Sungjoo Ahn; Hanseok Ko (IEEE Trans. Consumer Electron., 2005)

Enabling directional human-robot speech interface via adaptive beamforming and spatial noise reduction. - Jounghoon Beh; Taekjin Lee; Sungjoo Ahn; Hyunsoo Kim; David K. Han; Hanseok Ko (IROS, 2007)

Combining acoustic echo cancellation and adaptive beamforming for achieving robust speech interface in mobile robot. - Jounghoon Beh; Taekjin Lee; Inho Lee; Hyunsoo Kim; Sungjoo Ahn; Hanseok Ko (IROS, 2008)