TY - BOOK AU - Williams,Charles S. TI - Designing digital filters SN - 013201856X AV - TK7872.F5 W56 1986 U1 - 621.3815/324 19 PY - 1986/// CY - Englewood Cliffs, N.J. PB - Prentice-Hall KW - Electric filters, Digital KW - Design and construction N1 - Includes index; Bibliography: p. 341-344 ER -