Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Shogo Nakamura and Yoshihiko Horio and H. Takase,Switched-capacitor pre-processor for speech processing using SC CIC filter,IEEE International Symposium on Circuits and Systems,,IEEE,2003-01-13,,,1311-1314,https://cir.nii.ac.jp/crid/1870583642897384448,https://doi.org/10.1109/iscas.1989.100597