Using which of the following methods, a digital IIR filter can be directly designed?
A. Pade approximation
B. Least square design in time domain
C. Least square design in frequency domain
D. All of the mentioned
Answer:A
Using which of the following methods, a digital IIR filter can be directly designed?
A. Pade approximation B. Least square design in time domain C. Least square design in frequency domain D. All of the mentioned
Explanation: There are several methods for designing digital filters directly. The three techniques are Pade approximation and least square method, the specifications are given in the time domain and the design is carried in time domain. The other one is least squares technique in which the design is carried out in frequency domain.