Low bit-rate MPC coders with adaptively controlled synthesis filter parameters. - Seiji Hayashi; Masahiro Suguimoto; Genya Kishi (Signal Process., 1994)

Low bit-rate CELP speech coder with low delay. - Seiji Hayashi; Masahiro Suguimoto; Erinnoviar (Signal Process., 1999)

Speech Quality Enhancement Using Wavelet Reconstruction Filters. - Seiji Hayashi; Masahiro Suguimoto (IEICE Trans. Inf. Syst., 2005)

Single Channel Speech Enhancement Based on Perceptual Frequency-Weighting. - Seiji Hayashi; Masahiro Suguimoto (IEICE Trans. Inf. Syst., 2007)

A Subtractive-Type Speech Enhancement Using the Perceptual Frequency-Weighting Function. - Seiji Hayashi; Hiroyuki Inukai; Masahiro Suguimoto (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)