Minoru Okamoto Toshihiro Ishikawa S. Marui Masayuki Yamasaki Katsuhiko Ueda Nobuo Asano Mitsuru Uesugi Yoshiko Saitoh Yukihiro Fujimoto Susumu Furushima 3215-3218 1995 ICASSP https://doi.org/10.1109/ICASSP.1995.479569 https://doi.ieeecomputersociety.org/10.1109/ICASSP.1995.479569 conf/icassp/1995 db/conf/icassp/icassp1995.html#OkamotoIMYUAUSFF95