Speaker-independent word recogniton in noisy environments using dynamic and averaged spectral features based on a two-dimensional mel-cepstrum. - Tadashi Kitamura; Etsuro Hayahara; Yasuhiko Simazciki (ICSLP, 1990)

Speaker-independent spoken digit recognition in noisy environments using dynamic spectral features and neural networks. - Tadashi Kitamura; Satoshi Ando; Etsuro Hayahara (ICSLP, 1992)

An Optimal Design Consideration for Higher-Order Delta-Sigma AD Converter. - Yikui Zhang; Etsuro Hayahara; Satoshi Hirano; Naohito Sakakibara (J. Circuits Syst. Comput., 2002)