Pitch detection of musical sounds using adaptive comb filters controlled by time delay. - Yoshiaki Tadokoro; Wataru Matsumoto; Michiru Yamaguchi (ICME (1), 2002)

Pitch estimation of difficult polyphony sounds overlapping some frequency components. - Yoshiaki Tadokoro; Masanori Natsui; Yasuhiro Seto; Michiru Yamaguchi (ICINCO-SPSMC, 2006)