Phase based features for cognitive load measurement system. - Tet Fei Yap; Eliathamby Ambikairajah; Eric H. C. Choi; Fang Chen 001 (ICASSP, 2009)

Glottal features for speech-based cognitive load classification. - Tet Fei Yap; Julien Epps; Eric H. C. Choi; Eliathamby Ambikairajah (ICASSP, 2010)

An investigation of formant frequencies for cognitive load classification. - Tet Fei Yap; Julien Epps; Eliathamby Ambikairajah; Eric H. C. Choi (INTERSPEECH, 2010)

Cognitive load classification using formant features. - Tet Fei Yap; Eliathamby Ambikairajah; Julien Epps; Eric H. C. Choi (ISSPA, 2010)

Voice source features for cognitive load classification. - Tet Fei Yap; Julien Epps; Eliathamby Ambikairajah; Eric H. C. Choi (ICASSP, 2011)

Formant Frequencies under Cognitive Load: Effects and Classification. - Tet Fei Yap; Julien Epps; Eliathamby Ambikairajah; Eric H. C. Choi (EURASIP J. Adv. Signal Process., 2011)

Voice source under cognitive load: Effects and classification. - Tet Fei Yap; Julien Epps; Eliathamby Ambikairajah; Eric H. C. Choi (Speech Commun., 2015)