Introduce o Classification of Digital Filter According to the characterization of the eliminated frequency component, the digital filters are usually classified as ◆ Classical filters The useful frequency components in input signal are different from the eliminated frequency components ◆ Modern filters The signal is aliased into interferer frequency component 2021年12月5日2时7分2021年12月5日2时7分 Introduce According to the characterization of the eliminated frequency component, the digital filters are usually classified as: ◆Classical filters The useful frequency components in input signal are different from the eliminated frequency components. ◆Modern filters The signal is aliased into interferer frequency component. ⚫ Classification of Digital Filter